Insecurities

I’ve been having some insecurities lately about myself and my relationship. My boyfriend is amazing and I know that I’m just projecting my own insecurities onto him. I try to self reflect and understand where they’re coming from but some days it can get so hard. I get caught up wondering if he talks to other girls and etc etc. He’s never given me a reason to believe that he’s unfaithful to me. Does anybody have these issues too? How do you deal with these emotions