Follow-up to dump post

[PoBoy321]

As a follow-up to this post, where I had the dilemma of what to do when I was taking a dump while my roommate's prospective came into the apartment, I'd like to as the following question.

Apparently "it's official," and my roommate is now dating this girl. I guess he gave her his varsity letters or something. Anyway, I feel that now that they're official, it is my right, nay, obligation, to be as obnoxious to her as he's been to my girlfriend for the last two years.

Suggestions?