Jesushasoneforme, weren't you complaining not too long ago that you were lonely or that you
couldn't get a girlfriend? Please correct me if I'm wrong. I've seen so many of those types of threads that I'm probably confused. I do understand what it's like to be insecure while in a relationship so I can see where you're coming from. In my case, I sometimes let my past experiences haunt me. I figured that since I wasn't good enough for one person that must mean that I won't be good enough for anyone else, and that's when I start not being good enough for myself. Again, this happens if I let my insecurities get to me otherwise I'm fine.
I can't be comfortable with a person unless I am certain that they really like, want or care for me and it could take me a long time to realize. I have my pride and I have my insecurity. When I've been on my own, I've had my insecurities, but I find that I am at my most confident and happy. I am good enough for myself on my own. The one relationship in which I felt super confident in was when in my last year of high school. Every time my ex looked at me I could tell that he thought I was amazing, and he wasn't afraid to show it. I also thought he was gorgeous and openly let him know it. I remember that some years before we dated, both my friend and I were interested in him. Of course, she was so gorgeous that I didn't think he would be interested in me at all. When she was around, no one gave me the time of day. :

: My other friend had asked him whether he would go out with my beautiful friend and he had told her that he liked me instead. Years later, he told me. Unfortunately, we were way too different and he didn't know the real me. Eventually, he moved and that was that. Come to think about it...I wouldn't want to be with him now. I don't mean that as an offense to him, but we would have clashed eventually. Sorry, I was reminiscing there for a moment. :

:
Back to business. I've come to learn that some of us are often not ready to be in a healthy relationship. Not until we overcome our problems. Loneliness sometimes gets the best of us and we end up in a relationship and then ruin it with our insecurity. What is the point of being in a relationship if we think or fear that we're living in past failed relationships? It's might be a struggle, but if you can't separate your past relationships from your current one then you'd be better off ending the relationship.
I don't think relationships are crazy. Relationships don't run us, we run them (sometimes to the ground).