4 years ago
Paramour 2 - Liara
I just finished Mass Effect 2 (Legendary Edition) on PS4 with an imported saved from Mass Effect 1. My Romance option in ME1 was Liara, so in ME2 I decided to rekindle the romance during the Lair of ...
She never gave the achievement in the original ME2 so MELE might have inherited that.
@Defective14Is not oversight because Liara was never part of your crew (same goes for Kelly which will not trigger romance despite the nice dance). The romance achievement triggers if you follow the romance scene wile Normandy engage the Omega4 relay.
At any point, if is achievement only that you are interested, use a save right before going to Omega relay and increase the romance level with one of squad mates. That will trigger the achievement without the need to replay the game (not sure if is any save editor for PS).
Side note, since you went for Liara, it's better to pass your character to ME3 with no romance (except the romance tour) in order to avoid some awkward situations.