Odd feelings

I noticed this new act in me which I didn't even know how it come in me. I am configured to love but not for long period of time. I develop this feelings, and after I confess to the one I have the feelings for, the feelings disappears in me

It's just not making sense to me personally, but that's what I find my self doing. Not intention or being controlled by anyone. It is damn bad cos I feel like I would be hurting girls. Best thing is just let it hurt me, not the girls again.

This has been happening to me since I broke up with my ex-girlfriend two years ago . I think I need help