relationship advice

Hello,

I am a 30 year old female, my boyfriend is a 40 year old male. We have been involved in a relationship for 6 months now. 4 months ago his ex girlfriend started calling, stating that she misses him and wants to work things out. He claims he is only trying to work things out with her to save the 20 year friendship and 6 year relationship. When they talk on the phone (at least once a day) they are talking about what went wrong in their relationship. She calls frantically and wont give up until he answers the phone. She tells him that he should leave me, b/c we have been involved for 6 months and they had 6 years. She also says if they are both single later on down the line, she would like to get back together, and he agrees. He tells me all about their past dysfunctional relationship and most of what they talk about when she calls. This of course hurts me very much and i hold alot of resentment towards the two of them (especially her).

He has drug this out for far too long, claiming he doesnt want to hurt her, (eventhough she dumped him, and when she found out he was seeing someone else, she wormed her way back in.) So, in conclusion I feel like are talking about this situation, has gotten us nowhere, infact I am extremly angry and cannot talk only yell! The other day I pushed him out of frustration, and he said if I do that again he will bail on me. Please help, I am not sure how to apologize for pushing him and want our relationship to feel brand new again. I love him so much. Thank You for your time and concern.

Sincerely,
Apryl Johnston
apryl41692@aol.com

P.S. did I mention that he caught me checking his cell phone to see how many times a day they are in contact with each other. Now he doesnt trust me and I do not trust him.