JL
I think we are attracted to the kind of people that we are familiar with. For example, my Mum suffered from depression when I was a child and I had to grow up pretty fast and become a little caretaker. So, the relationships I got into when I was older were all with people that needed looking after in some form. Until I recognised and worked through that need to be needed, I would never find healthy people attractive. Al-anon, counselling and, of course, Melody Beattie, all helped me to unravel my drivers.
I would suggest taking time to work on yourself before getting into another relationship.
Good luck!