Will he ever believe me

am datin a guy who schools at KNUST but am in Accra.he is in his final year and am in shs.whiles he was in school and i was home,there was a little fling between me and his cousin.there was no sex between his cousin and i but he believes i couldn't have entered his cousin's room without him touching me.honestly, we kissed but nothing else.now all i want is to let him believe that i didn't have sex with his cousin.I NEED HELP TO MAKE HIM BELIEVE ME

Hi, GWENDO hit the nail on the head. He won't trust you because that trust is gone. You did something wrong so you have to own up to it. And you can't expect someone to just brush it off. It meant nothing to you, it means something to them.