Relationship issues

I've been dating my bf for 8months now, and he is honestly the best boyfriend I've ever had. He's never done anything wrong, but lately I just feel different about him. I just haven't found myself attracted to him for the past few months, I struggle with a little depression when I get stressed so I thought it was that, but I haven't came out of it like I normally do. I find myself being attracted to other people but turned off by him. I feel terrible about it because I really do care about him, but I don't know why there isn't a connection anymore. Any advice on what to do? I know a lot of people will probably say break up with him if I'm not in love but I feel like it's more complicated than that. I care about him a lot and he's an amazing person but I just don't know if he's the one anymore. Any help would be appreciated