No. He literally cant change that number. That number is irrelevant. If you base the success of a relationship on his body count, its bound to fail. He was probably scared you were gonna judge him. Which seems to me like you are

it’s like i can kinda understand where you’re coming from because if you date someone that has had multiple sexual partners they could have something you don’t wanna catch but then again that question is too personal...idk but yea

Well it depends. If hes lying about who hes talking to right at this moment while hes talking to you then yes you should stop talking to him. And if hes lying about it in the first place thats bad however i wouldnt personally ask that wuestion until later.