Just broke up with serious boyfriend, his friend started flirting within hours. How should I deal with this?

I'm having enough trouble getting over the break up, then his friend, who I'd been friends with as well when we were dating, finds out we broke up. He was nice and friendly at first, nothing out of the ordinary. Then he offered that I could tell him anything, and started asking about nude modelling for the art classes on campus, then proceeded to ask if I would be in those art classes. He was just being overall creepy, which is unlike him from what I'd seen when I was in a relationship. How do I deal with this guy?

Plus, pictures of cute fuzzy things would help if you don't have advice, or both. Both works. Break ups suck. :(