Torn

I am torn between two things right now. I recently met a very kick ass chick and I like her but part of me feels she could be my kryptonite. I usually follow my gut feeling but my gut tells me nothing on the matter. I feel I should go after her. While at the sametime I feel I shouldn't in the feeling that she will be bad for me.
Which part of me do I listen to because I can't do both and I am scared to do either of them. I think people run into this problem with something in their lives. I have a few times in different areas of life.

Should I stay or should I go is the scenario right now. I am at a loss for what is better for myself. I know I can take punishment. I also know that I don't like taking or dealing it. It hurts deep inside me when it happens, like there is a part of me that knows what I am doing is stupid and hurting me more than I know.
Its been said its a good thing to start what you finish, yet I find myself stranded and lost not knowing what I've actually started or whats been finished.

Its a trial by error. I think the thing to do in this situation is to just go for it. Jump and see if I fall.