Regarding sex. LOL. I have an attractive "bragger" too. When you've got time for some soap opera, check out my threads.
Yes, we had sex and this is touchy. And yes H felt bad and still kept coming back for more (though he was disinterested at certain points). And, I turned him down a few times and then I felt like I needed to give it to him because I wanted him to see what he'd be missing (Sex sucked in R), and I wanted it and I wanted the connection. But, I don't think it has really gotten me anywhere except him thinking I'm here, ready and waiting. It is called "cake-eating" and it is likely not the best strategy. I have to run but we can explore this too.
Oh, the addiction thing, yes. Same in my sitch. Not drugs and alcohol but compulsive and impulsive behavior, debting, over-eating etc...interesting.