Their first date is objectively pretty great. But later, when Bucky comes after Steve slides inside him and slaps him on the ass, Steve knows this is going to be fun.

While the Asset is in the middle of an experimentation session with the Chem Sci department, an emergency happens in another lab. One of the other experimental creatures escaped its containment cell and the Asset is ordered to go take care of it. He's hosed off, plugged up, geared up, and sent upstairs post-haste to deal with the problem. Unfortunately, the Asset is still flush with drugs that make him incredibly aroused. When the escaped creature notices, he takes an interest. Much to the Asset's delight.