You could just not answer his calls, but if you want to not have to be caught off gaurd or change you # then maybe just be honest. Say I'm sorry, I am really having second thoughts. i'm just not looking for a relationship right now. or ...You and your boyfriend of 3 years have just gotten back together so you are now unavailable. you know, honest stuff like that. Can I tell you what is sooo cool. Now I know what OT means. All this time I havn't really paid attention. At one point I thought it was a person. Holly crap, duh moment.