I didn’t believe my partner and now I just feel terrible

My partner is a nice guy. We’ve been together for a few years and I was tailed by a man one day who was following me and turned out to be a stalker. I was an intern in high school at a store and this stalker was after one of my co-workers. He was turned in, but had a traumatic effect on me. My partner was so kind to me about it and became my safe space. He has always been so patient with me and understanding of my past. <br><br>A couple of weeks ago, my partner was walking the dog. There are a lot of homeless people on our block. While my partner was walking the dog, there was a homeless person on the block. He said he dropped his phone right before he walked by the homeless person and the homeless person grabbed him. He said he got away and it was not a big deal and didn’t want to file a report or even call the cops. I’ve always been the type of person to run away from danger because the thought of confrontation makes me sick. My partner is the opposite. He said he told the homeless man to drop the phone. The homeless man was startled and dropped it and hit my partner in the mouth. My partner said he felt his lip split. I saw it, and his lip was swollen. He was bleeding. We went to the hospital and said it was a dog bite. <br><br>When we got home I thought about it and it didn’t make sense that a dog had bitten my partner that hard on the lip. I confronted him about it and he repeated the story. I told him I didn’t believe him and he got upset and left. I was so stupid. I should have listened when he told me what happened, but I didn’t believe him. Then he came back later and told me what happened again. I said I believed him this time. He left again he didn’t believe me. I made him feel like a liar. I hurt his trust because of my own insecurities. I miss him so much and I can’t sleep. I have been wanting to talk to him, but I don’t know what to say. I messed up so bad. ??