my partner never gave me any reason not to trust him.. until a few days before christmas he went out with the 'boys' and i saw messages the next evening where he had sent a message saying to his mate that he was trying to 'get on this girl but his mate messed it up' i confronted him about this first of all he made me out to be crazy by deleting the message and pretended i imagined it, he then said he was just showing off and he didnt cheat nor intend to. ive been trying to put it to the back of my mind after 5 years together i expected more from him. now hes saying about going on a lads holiday with the same lads as before. they are such a bad influence they cheat do drugs everything ive said i cant bare the thought of the holiday but he doesnt care i dont know what to do.