I had him charm Miranda to the point she had that xesual tension for him. I took Liara back to my bunk on the Normandy, then after that I worked on my last two missions particularly the Omega-4 that triggered my romance completion with Miranda. Funny thing is that despite Liara knowing about me cheating on her with Miranda, she still slept with me, and Miranda didn't care either. Now on the same play through after beating it, I'm trying to see if I can bed Tali. I let her know that I was interested.
Romance | Mass Effect Wiki | FANDOM powered by Wikia
The Romance system in Mass Effect 3 is different than in previous games. When you successfully woo a romanceable character in Mass Effect 3 you will unlock a cutscene, like in previous games, but unlike previous games the cutscene may not involve sex. There are 11 characters you can start a romance with -- or rekindle a romance with if you imported a save -- in Mass Effect 3. The following sections include mini-walkthroughs for every romanceable character in Mass Effect 3.
Commander Shepard has the option to pursue heterosexual romantic involvement with a human squad member — male Shepard with Ashley Williams , female Shepard with Kaidan Alenko — or xenophilic romance for either gender with the asari squad member, Liara T'Soni. Regardless of gender, Shepard can also have a sexual encounter with Sha'ira , an asari consort. Note: As part of a workaround for a programming issue, Mark Meer and Jennifer Hale voiced all of the lines for both human romances in Mass Effect even though the romances were intended to be exclusively heterosexual.
I've played the original trilogy more times than the average bear, with at least hours in each of the three games. Nasty, alien sex. Ah, but now, dear reader, things get interesting.