What should I do about him?

When I'm feeling lonely and bored, I always get urges to do crazy things. Right now I'm thinking about calling a guy who gave me his number, but I decided not to call him. I get very needy and want to hear someone flatter me, even though there is a reason why I'm not involved with him. I don't know what to do. I'm afraid that I'll lose my willpower and call, but I'll inevitably end up 1) hurting his feelings, or 2) dating him, to my own demise. I've been feeling this way for weeks. Why can't I just get over myself?? What can I do to stop it?