Opening up..

So Dayne Jarvis, a guy I knew a long long time ago, is trying to get back into my life. I won't go into the sordid details of our past, but if I were to base my decision on things long gone. The answer would be no. But should I give him that chance? We were never actually involved, he was the friend of my boyfriend (with drama). So my problem is, every time I start to speak to him, I get flash backs. Then I start to wonder if this is really what I want.. I just don't trust my instincts anymore and for damn sure I don't trust him.