Sorry, I know this sounds a bit pathetic. I'm probably going to give unneeded detail too but I don't want to drip-feed anything.
I've known a man for a long time and we were close friends. About 5 or 6 years ago it became more and we started sleeping together. I always wanted it to be an exclusive relationship, but he didn't. Then just over two years ago I fell pregnant (by him). I had an abortion, which I regret, and during the whole experience and after it he was less than supportive. I was angry at him for a while, but I'm gradually feeling better about it all. We continued sleeping together, me still wanting to be exclusive, and him insisting he didn't want a partner.
Then last year he told me he was going on a date with another woman. I cut contact and didn't hear from him for months. I know he was within his rights to go out with someone else, but I couldn't cope with the idea.
A few weeks ago he messaged me. Apologised for hurting me, and said he wouldn't do so again. I met him for a drink, he wanted to come back to mine, and I said no, not without a relationship. He said he didn't want that, and then walked out of the bar when I was at the toilet. The next day, of course, I get the apology texts asking for another chance. I've seen him a couple of times since and I've slept with him.
He came over to mine yesterday, and I fully intended to sleep with him again, and he knew that. He started kissing me after a few hours of chatting, and for some reason I just didn't want to sleep with him. I honestly don't know why. I told him I didn't want to, and he said 'should I go then?' and I was surprised and said okay. He started to leave and I said not to be silly, stay and have another drink, but he insisted on leaving. I text him saying I thought it was ridiculous he had left just because I had said I hadn't want to have sex with him right that minute, but he said I had made things really awkward suddenly stopping.
He hasn't been in touch today and I have no intention of getting in touch with him, but I've been going over it in my head and don't know if I done anything wrong or not.