Bpd is ruining my relationship

Ok so I hate to admit it but the way I think about my relationship is unhealthy. In the last month, ice felt so scared and depressed and paranoid about my relationship with my boyfriend. We've known eachother forever, have history together, our relationship is still new. We have an interesting dynamic but like.... the slights things just set me off lately. I just miss him and I'm starting to feel uncertain about my relationship. I feel like I'm going crazy. No matter how many times I try to rationalize it, I can't believe that my boyfriend likes me. And is still with me. I feel so anxious that he doesn't actually like me despite reassurances. Nothing seems to calm me down. I'm obsessing over it. I know that paranoia in bpd alters our reality. I know this is irrational thinking but I can't stop and I'm so scared. I don't know what to do. I feel like I need to break up with him to save myself the heartache and save what's left of our friendship.... I feel just rlly insecure. It's destroying me. Idk if it's him or me but I'm scared. I like him so much and don't wanna break up, but if I can't believe that he likes me.... then like.... hhh djdjd