I don’t know what to do 😭😭

So a couple people have told me that my bfs cheating and he swears he’s not and Reassures reassures me that he’s not and the people don’t have any proof but I just don’t know what to do like I don’t wanna break up with him if he’s not cheating on me but at the same time I don’t wanna stay and get cheated on and look stupid! Someone please help me it’s just so overwhelming and the most part is that I don’t know.... any tips ?