My boyfriend became friends with this girl one of his friends used to date for 8 years. Ever since he's been talking to her, and I told him my feelings on this since she had a crush on him years ago, which were that it makes me uncomfortable, he's COMPLETELY changed. Our physical and emotional connection is lost and I'm sure it's because he's talking to her and probably hanging out with her on a regular basis.

We've gotten into soooo many arguments since she's become a part of his life (which I can't point out because he defends their friendship) that we blew up at each other and took 4 days off after seeing each other all the time and having the best days of our lives.

Now when I see him, he said he's scared our relationship has become routine and he feels like I'm being controlling (all of a sudden). He's saying all these strange things - like he feels like he's in a bubble and that I'm asking him to "cut" his friends off...and that we can't "divert" from what we do together. It's like he's coming up with all of these things he doesn't like about us all of a sudden when we were ecstatic for over a year!!!
I can't accuse him of cheating even though the signs are there. When I saw him yesterday, he didn't touch me and he sat there with his arms folded, very defensive, still saying he's afraid. It was like there was a thick wall between us and I could see that his mind is reeling with guilt over SOMETHING..I can't prove.
We both cried and held each other this morning, wanting things to go back to the way they were. I can't come forward and tell him this girl is the reason he's acting different - he admitted in passing that he and another friend of his hung out with her all day Saturday, so now I'm positive he's hanging out with her and talking to her all the time.
Being with him is like being with a stranger, but I know NOT being with him means he's with her and I'm just wanting him to end the relationship already instead of making it harder on both of us. He said he doesn't want to break up with me, but all the signs are there...
What do I do? I'm so in love with him and want to spend my life with him - but this woman came in between us and I can't verbally accuse him of cheating with no proof HELP!!!