You'll have to do some investigating. But not anything to make her feel offended that she would cheat on you. But, just keep looking. Can you tell me more?

if you look down and youll see what ive seen ( i already told some one)

I looked down before. I'm just sayin do more searching

how? like what do you mean?

DO EVERYTHING YOU CAN.

ahhh YES SIR

Talk to her

ok and wat if she is cheating? she wont be all like "o ya im suckin another mans dick i 4got yo tell you soryyyy" and how do i know if shes telling the truth?

Well do you know she is cheating? Like rumors or actual evidence?

like littole things like i was like "hey you wana catch a movie and some dinner?" and she seaid she had 3 sweet 16s one weekend and 1 moar the next weekend and i saa on her wall she was flirting with some dude and when i asked her about it she said it was nothing.