Will he trust me again I need help !?

Okay i really need a answe i dont think im gonna get many but long story short my BF CAUGHT THIS GUYS info in my computer his email adress. The guy who i used to know years ago before me and my bf were dating or knew each other did know me through my twin.nothing went on i never dated him long story short the guy was a friend on fb who tried to holler at me after i told him numerous times i have bf. my bf says some about him I deleted him. I never lioed topm bf abt the guy i told he was nothing but he does not believe me.before he was commenting on my post about trying to get with me he asked me to hack into his page i agreed it didnt work and i told him tha was the end of that the only one on one conversatin i had nothing more nothing less im sorry for whati did to my bf he does not believe me and i donthink it gonna workout whatto how can i repair his trust