TL;DR
Seven companions in Rogue Trader can be romanced. Two are gender-locked to your Rogue Trader: item:cassia (male RT only) and item:heinrix (female RT only). The other five are open to any gender: item:jae, item:yrliet, item:marazhai, item:kibellah, and item:solomorne. Marazhai is the one male companion a male Rogue Trader can pursue, so he is the go-to same-sex base-game romance. You can flirt with several at once early, but the quest The Lord Inquisitor and The Lord Captain forces you to commit to one. Pick your love interest before that beat or the game picks the cutoff for you.
The seven romanceable companions at a glance
| Companion | Gender lock | Source | Romance opens |
|---|---|---|---|
| Cassia Orsellio | Male Rogue Trader only | Base game | Chapter 1, after recruiting her |
| Heinrix van Calox | Female Rogue Trader only | Base game | Chapter 1, after defeating Aurora |
| Jae Heydari | Any gender | Base game | Chapter 2, at Footfall |
| Yrliet Lanaevyss | Any gender | Base game | Chapter 2, on Janus |
| Marazhai Aezyrraesh | Any gender | Base game | Recruit Ch. 3, resolves Act 5 |
| Kibellah | Any gender | Void Shadows DLC | Errand: Ritual of Binding |
| Solomorne Anthar | Any gender | Lex Imperialis DLC | DLC Act 2, Heartless Void |
A male Rogue Trader's pool is Cassia, Jae, Yrliet, Marazhai, Kibellah, and Solomorne. A female Rogue Trader's pool is Heinrix, Jae, Yrliet, Marazhai, Kibellah, and Solomorne. Marazhai matters here: he is the only male companion a male Rogue Trader can pursue, which makes him the pick for players who want a same-sex base-game romance.
The rest of the roster stays platonic. item:abelard, item:argenta, item:idira, item:pasqal, and item:ulfar are not romanceable, and neither are the secret recruits Uralon the Cruel, Incendia Bastaal-Chorda, and Calligos Winterscale. For who actually earns a party slot, our companion tier list ranks the full roster.
The one rule everyone trips on
You are allowed to play the field early. Flirt with two or three companions across the opening chapters and nothing punishes you for it. That window closes at the quest The Lord Inquisitor and The Lord Captain, where the game makes you settle on a single love interest. Miss the choice and the cutoff lands wherever your last meaningful flirtation pointed. Decide who you want before you start that quest, then steer your dialogue toward them in the chapters leading up to it.
Cassia Orsellio (male Rogue Trader only)
Cassia is the slow, formal one. The trap is treating her as a Navigator asset instead of a person, and the game tracks the difference. Start on the bridge and take the "You are beautiful, Cassia" line. Back her in the automatic bridge scenes the ship plays between systems. In Chapter 2, choose to send birds to her room. That beat deepens the bond rather than stalling it.
The warning is real. Cassia rejects intimacy early in the romance. Push physical options too soon and she refuses. Fail those attempts enough times, or joke twice about ending things, and the romance breaks for good. Patience reads as respect here, and respect is what she responds to. The beat-by-beat dialogue picks are laid out in our Cassia romance guide.
Heinrix van Calox (female Rogue Trader only)
Heinrix opens right after you defeat Aurora, in the quarters scene. Take the line "You misunderstand me. I am not unnerved by your status, but by you personally." That single answer sets the tone. He wants to be seen as a man, not as an Inquisitorial agent or a political match. Continue the thread after Gleam of the Final Dawn on the bridge.
He leaves at the start of Chapter 2 and rejoins after Tattered Spirit, so the romance pauses rather than dies during that stretch. When he is present, choose physical-touch options and lean Dogmatic in your answers. He values a Rogue Trader who shares his conviction and sees through the face he wears for everyone else.
Jae Heydari (any gender)
Jae is the easy, flirty romance, and the most forgiving on this list. After she joins on the bridge, take "Has the esteemed princess' heart been claimed by some lucky fellow?" and keep being supportive. Use your authority to clear her problems rather than lecture her about them. The standout beat: you can gift Jae an entire planet through High Factotum Janis Danrok, which is exactly the grand gesture she wants from a Rogue Trader.
There is loot in it too. A successful Jae romance unlocks an errand that rewards a Sirocco, and the relationship grants bonus quests across Chapters 2 and 3. When she takes the field, this officer setup turns her into a turn-economy engine.
Build: 03df5849ffd0Yrliet Lanaevyss (any gender)
Yrliet is the hardest, slowest burn, and the way you lose her is by playing her like everyone else. Do not flirt, kiss, embrace, or use physical-touch options early. She abhors intimacy, and an early advance kills the romance outright before it starts.
Build it the Aeldari way instead. Talk to her about human and Aeldari relations, learn from her rather than challenge her, and when she meditates, sit with her and leave her undisturbed. Forgive her in Act 3, side with the Aeldari in Act 4, and at the finale do not let the ritual finish. Interrupt it and promise to find her soul stone. Every step is restraint, the opposite of what works on Jae.
Marazhai Aezyrraesh (any gender, same-sex option for a male RT)
Recruit Marazhai in Chapter 3 and keep him alive. He likes cruelty, so agree with him when the cruel read is on the table. In Chapter 4, finish his companion quest and save him rather than killing him or letting the daemon take over. You can settle into a dominant or submissive dynamic, and the role is changeable early in the romance.
He breaks things off if you refuse danger too often, so do not play it safe around him. Seeing the romance through grants the talent Taint of the Heart, which carries stat bonuses, and the final scene lands in Act 5.
Kibellah (Void Shadows DLC, any gender)
Kibellah enters the romance during the errand Ritual of Binding. The framing matters as much as it does with Cassia: treat her as a person, not a weapon. After the ceremonial fight, take the dialogue that shows you understand her, then run her companion quest Rituals of the Upper Decks, a high-society party with a long dialogue chain that ends in a dance, a kiss, and somewhere private.
She is easy to start and hard to keep. After Chapter 4 she confronts you over philandering, so the exclusivity discipline pays off here in particular. Your romance choices can also shift her conviction over the course of the relationship.
Solomorne Anthar (Lex Imperialis DLC, any gender)
Solomorne's flirt options recur every time you talk to him, starting aboard the Heartless during Heartless Void. Compliment him directly and call him charming. The bed-scene track runs through "Wink" and then "Take his hand." He refuses at first and relents later, so keep selecting romance options when they appear. A hidden quest only opens if the romance is live, which makes him worth the persistence for completionists.
Where to take it next
Once you know who you want, the next question is who rides with them. The companion you romance still has to earn a slot in your active party, and the build matters more than the relationship when the shooting starts. Our per-companion build guides cover how to spec Cassia, Heinrix, Jae, Yrliet, Marazhai, Kibellah, and the rest, and the companions guide helps you balance a roster around your love interest without leaving a hole in your damage or your defenses.