I ended it with him…?

Hey guys, so I have decided to end things with the guy I was seeing because I don’t trust him. I felt like he was seeing other women because of the unexplained sex stains on his clothes and around his house that I knew wasn’t from me. The broken bracelet pieces that were on his couch because I know he cleans weekly. I couldn’t take overthinking anymore and ended up just blowing up on him and telling him I’m done. Now I feel bad because I miss him. His birthday is in 3 days and I don’t know if I should still tell him happy birthday or leave it be.
I ended it with him…?
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