Best friend

So he told me that he loves me on the night of prom when we were alone on the deck getting air. I was never sure how I felt so I couldn't give him an answer which I felt really bad about - no matter what happened he still wanted to be friends. So July rolls around (prom was may 6) and he starts dating someone but doesn't tell me for weeks. I wouldn't have cared if he was with someone if he had told me, but I felt like he didn't trust me and didn't want me to know despite telling me I was the only person he could tell anything to. Their relationships didn't last long, she cheated. We continued arguing. He admitted he never stopped loving me. I still don't know how I feel. (Sorry that this is so confusing 😂 it's complicated lol) and now this