The concerned, parental figures of the gaming world (the ESRB) have given Mass Effect 2 a 'M' rating, mostly due to its in-game strip club and the ability to have "romantic encounters" with aliens and humans... And it will be pretty sad when Shepard receives more sexual encounters than I do. The lady and I got in a fight about who's team is better: Team Edward or Team Jacob... We aren't on speaking terms as of this post.
"During the course of the game, players may enter a bar where alien pole dancing exists (choreography highlighted on big-screen monitors) or hear suggestive comments such as "krogan sexual deviants enjoy salarian flexibility" and "if this is just about sex, maybe you should just f**king say so."
"Players can also choose to have "romantic encounters" with the alien/human henchmen characters; this involves watching a guided cutscene in which two characters flirt, kiss, and/or embrace: clothed alien/human characters may prop a partner on top of a space console, clear away the clutter from a bed-slab, unzip a future-blouse, or just talk it out. Though an alien/human may gyrate her hips while on top (fleeting—one-to-two seconds), actual sex is never depicted—the camera cuts away to space furniture and ceilings."
It looks like we can expect more of the same as far as the sexy scenes are concerned, although it does sound like they've made it more passionate with the "clearing away the clutter from a bed-slab". That sounds like my encounters in college, if the "clutter" is skittles wrappers and Lucky Charms' crumbs.