Thanks. I did talk to my roommate about this last night, and there's one other woman I really trust who I might confide in. That's a really good suggestion, to ask them to keep an eye on me in social settings. All we officially have left is graduation and the reception lunch, so unless he specifically comes up to talk to me, he should be pretty easy to avoid. If I have these friends who know I'm worried, they can help head off the possibility without having to contact him directly.