I think it's possible with a combinaison of Traynor / Cortez, Diana and/or "main" character (ex: Miranda, Liara,...). I read somewhere that if you pursued your romance with Jack or Garrus in ME3, you can't romance anymore characters. I'm far from being sure though, never tried it myself. JohnMD (talk)
- No, once you make a choice about starting or continuing a relationship in ME3, it locks you in with that character. You can flirt with multiple characters up to the point where the "lock" happens, but after that your stuck with monogamy. It's not like either Dragon Age game, where you could potentially have two or three different romantic partners in the same playthrough. 6thLyranGuard (talk)
- Dragon Age II actually uses a similar irreversible "lock-in" mechanism. I expect this is where the ME3 developers got the idea from. Dragon Age: Origins and Mass Effect 2 were the ones where you could pivot between various love interests if you felt like it. Origins, uniquely, made it possible to romance, break up with and then re-romance the same character in the same playthrough.
- That's in Mass Effect 2, and she doesn't really count as a romance- you don't get the achievement, you're not considered to have cheated on your partner (if any) from ME1, and there's no special scene with her. 6thLyranGuard (talk)
- According to the wiki, it's in Mass Effect 3. From the main romance page of the mass effect wiki: "Romances in Mass Effect 3 are much more straight-forward than in the previous titles. Shepard is free to answer favorably to one or more love interests at a time, up until a "locked-in" dialog choice is presented at a specific location. Should Shepard choose to answer favorably at that time, the dialog options for all other love interests will change - with the exception of Kelly Chambers. The game doesn't perform a check to see if the player is "locked-in" with Kelly for the other love interests. If the player "locks-in" with Kelly first, the player may choose to pursue a simultaneous romantic relationship with another love interest with both love interests unaware of the player's other romantic relationship. In other words, love-triangle confrontations do not occur, but the player can be a two-timer."NiftuCal (talk)
- You can do this with Jack, too, due to a bug. If you romanced her in ME2, then locked in another love interest in ME3, she's supposed to dump you when you meet her in Purgatory, and that is indeed what happens if you pick the first Renegade dialogue option that comes up in the conversation. The Paragon option, however, is bugged, and allows you to lock into Jack even after you've locked into someone else. If nothing else, it makes for some curious farewells during Priority: Earth.