Recently diagnosed with Chlamydia?

So long story short, I met someone towards the end of December and we hit it off well. One thing led to another and we had unprotected sex not too long after. Things were fine but a week and a half after I started spotting on and off. I’m thinking that maybe my period is coming soon so I pay no mind to it. We soon have sex again and I ended up bleeding a lot. Again, I’m not alarmed. My period comes a week later but even after I was waking up every morning bleeding. I’m telling my partner about it but he doesn’t believe that I’m telling the truth mind you he doesn’t have symptoms of anything. I went to the doctor and explained my situation. I haven’t hadn’t had sex 3 months prior to meeting this man and never had symptoms. She suspects I got an infection and sure enough I tested positive for Chlamydia. I was so angry and told my partner to get tested and he suspected that I got the infection first. He ended up telling me that during the same month before we met he was having unprotected sex with other girls but stopped once he met me. He has no symptoms so he has been blaming me and saying that I’ve been messing around when clearly I haven’t. I’m being treated and he’s going to go get tested as well and I’m so anxious because I have always been clean so I’m sure it came from him but at the same time I’ve heard stories where one partner has the infection and the other doesn’t. Is this true? I don’t want to be blamed for something I didn’t do