I'm in quite the unfortunate predicament. Some background: I dated a guy, let's say named Mike, who I was, and still am crazy about back in summer 2010. We dated a couple months, at the same time he was seeing other people. He told me about this guy "Josh" that he was seeing at the same time. It started out as a "gym buddy" actually and I thought it was harmless, but he then told me they were dating, he texted him all the time when with me, they fooled around, etc. I tried to be OK with it, I mean we are dating, seeing other people - that's fine. He would make a choice eventually. Honestly I thought I was "winning" and that he would choose me. Long story short: he chose Josh. They lived together for over a year, and had a full LTR. I stopped talking to Mike, it was too hard as I was really hurt because I like him a lot.
Fast forward to now. Mike and Josh ended things. I made contact with Mike again this past January online. We have been dating, spending a lot of time together, hanging out with eachother's friends, having great party nights together, and planning trips for the past 3-4 months. We are thinking about Europe in May and Toronto in June! It has all been fantastic, and I honestly couldn't be happier. He has said on multiple occasions that he made a mistake back then.
One problem. Josh isn't gone. Him and Josh are now "best friends". They still hang out, text regularly, etc. Mike tries to tell me that Josh and him are better as friends than they were partners. He assures me that there is NOTHING there. I have never met Josh or seen them together. But he says it's completely over but still considers him a great friend, wants him as a best man at his wedding, etc.
I can't STAND it. It bothers me so much. I'm not an insecure person, I know I have a lot to offer, but I am incredibly insecure about this and worried the whole situation is going to repeat itself. That they're going to rekindle things, get back together, and I'm going to get hurt again. Or at the very least that they're sleeping together while we are seeing eachother. Mike told me they ended things because Josh can't see himself being with one person forever, or wants an open relationship whereas Mike doesn't and is more monogamous. That made me worry that maybe Mike is waiting around for Josh to reconsider that choice, but then I asked if there were other reasons why they broke up and he said yes but didn't want to talk about it which is fine I guess.
This situation is RIPPING me apart. I really, really want to be with Mike. He makes me so incredibly happy but I can't stop worrying about what might happen or what may be going on between him and Josh still. I wanted Mike all to myself this time, but instead the guy he chose over me 3 years ago is still in his life. I really want to trust him. He has re-assured me about the situation twice now, I don't know what else to do? What would you do? I just don't understand how you can still be that good of friends with your ex and not be too hard/feel chemistry toward them.