Cheating

Winter • Follow me on Twitter @winter_blevins 😍
I know my boyfriend talks to girls that he says are just friends but before he gets home from school or before he hands me his phone he deletes his messages to the girls that are supposed to be his friends.. Should I say something to him? The only reason why I am worried is because he has cheated on me before the way I found out is reading his mesages.. So should I be worried or I'm I just over reacting?