Chad of course
that was in real life and he kept it a secret from her even before they were married

What did he keep from her??

He cheated on her with Paris hilton

Chad cause that was a real heart he broke he broke SOPHIA'S!!!! Brooke was a character and ironicly that happend to sphia in real life

chad!
lucas cheated with his soulmate peyton .
chad cheated on beautiful sophia w// PARIS, NOOO way he can justify that!

hey watch out what u say he is Not a heart breaker!!how do u know chad cheated on her!!!maybe she cheated on him!!?any way i dont like her any more.i just love chad!

He's a heart breaker like Lucas to us of course, because at movie we know excactly what happened in addition with his life. What ever he is great!!!!!!

chad

chad. he and sophia were married, which meant that he had promised his undying love and fidelity, yet he went on cheating with Paris Hilton. Plus, with Paris, I can assume that it was purely physical, it wasn't like he loved her that he cheated. There's really no justification to what he did.