I posted a little while back after my boyfriend told me he'd been texting another woman, but had knocked it on the head when she suggested meeting up. He told me at a time he was angry with me - to hurt me I guess. I was completely shocked.
This was before xmas and we are still together. We only see each other at weekends due to out work patterns and while the weekends are okay, mid week I am a mess. I feel
completely paranoid, insecure, panicky.. I get gripped with fear that he is lying to me about not meeting her and it builds up and up until I am consumed with it and in that moment I just want to end the relationship and ease the pain/fear. I've 'ended it' several times now. and then regretted it, and then ended it again.. etc etc. I feel caught in a loop, but we can't go on like this 
He went out with work at the weekend. Usually he would text on his way home but he didn't. I woke up in the middle of the night and then couldn't sleep after that - just my mind churning with images of him with another woman and completely caught up with the terror of it. I spent yesterday accusing him of stuff and screaming down the phone at home. I never used to feel like this with him, let alone behave like this. When I'm with him I believe he is telling me the truth but I can't seem to get it to stick for more than a day after the weekend. Is this a protective function against further hurt?
I don't know what to do any more, what I want, or how to make a decision. I just keep flip flipping back and forth.