I have a problem with them, in that they are always the ones I like the most. 
I recently met a man who categorically told me he didn't want a relationship at the start. However he kept trying 'to be friends' and texted and emailed all day long for weeks/ months. Looking back he wanted to string me along..
Eventually we started seeing each other, having sex, and even though he wasn't very nice to me sometimes and appeared very detached and distant at time and he continued telling me we were not having a girlfriend/boyfriend relationship, I felt so happy to be pursued by him. I thought I could change him and ignored all advice to the contrary. 
Four months later, I finally managed to end it, although I felt completely and utterly in love. :( I am so angry with myself. He didn't deserve anything from me at all.
I still feel obsessed and now heartbroken. I have had counselling/ had emotionally rubbish parents etc. but how can I move on and not keep making same mistakes when my heart is so powerfully attracted to this type of bloke?