This guy i really like has been hurt before and now is scared of love...?

i really really like this guy, hes been there for me through alot. hes ex of 2 years cheated on him through out their whole relationship and now he feels like every girl is going to do that to him. it doesn't help most of the girls in our town do nothing but sleep around. i on the other hand have had my share of heartache, & know exactly where hes coming from, i just wish there was something i could do to help him realize there are good girls out here & i would do anything to help him. any suggestions would be GREAT.