<human>: I've had some pretty bad relationships in the past, all ending for the same reason - I get cheated on a lot. 

I've now been dating a guy for about a year, and we only ever have one basic fight - my jealousy about his exes. I feel like he contacts them too much, he feels like he is allowed to do as he pleases as long as it is not inappropriate and he doesn't cheat. He maintains that he does not have romantic feelings for them, but I disagree. We currently have a session for couples therapy, but their first available session is a month from now.

Today I found an old valentines card from one ex, and another old note saying "you are the love of my life" while unpacking boxes from moving, and it has made me pretty resentful and pretty uncomfortable. I get that he had a life before me, and I don't think he meant to keep those notes or at least let me see them. Does anyone have any advice on how I can manage my feelings until I can go to counseling? Mostly I'm afraid that he is still hung up on both exes and will eventually cheat, or expects me to live up to them.

Summarize the given text in a few sentences.
<bot>: I'm jealous about my boyfriend's exes and I am starting to withdraw from the relationship, probably because I don't have any good memories of my own to think about. Any advice on compromising or getting over jealousy?