My friend doesn't like me anymore cuz i spoke about God?

like he's an atheist and i said one little thing like "yeah my mom said you'd be the perfect guy but all ur missing is Jesus" and he completey stopped calling me. and i just heard from another friend that he stopped calling me because of that remark. why did he get so offended. i'm not trying to force anything on him or say he's any worse of a person than i am. we're ALL imperfect!