Sorry to interrupt your posting, but I had to say
something...
NOT ALL MEN think about sex all the time.
Most of my friends are very pretty women, but I don't think
about bedding them. YES, I enjoy their company, but not for sexual reasons. If that were true, all of my friends would be pretty women, instead of most, and I would be buff from all the exercise. or atleast my right arm would be...
LoL... no, eye contact means he is thinking about something, but it doesn't mean SEX.
Maybe you should talk to him. Ask him to lunch and just have casual conversation. I don't think you need to bring it up directly, unless you are in a hurry, but from speaking with him you will most certainly get a better understanding of his motives.