A couple kiss and moves straight to bed. Sex is implied and we can see her nipples.
A few fairly innocuous sexual remarks (a roommate borrows a condom, a man refers to a date's large breast size). A couple kiss passionately but briefly, another couple share a passionate kiss and are later shown in bed together, presumably after having sex. A man's bare backside is briefly seen, and a woman is shown in the shower but her body cannot really be seen through the thick shower curtain