Dealing with your dad who broke something you both held dear (or so you thought...)?

well ive heard horrible things about my dad. like how he has cheated and lies all the time. i catch him in lies all the time but he says he doesnt lie even though everyone else says so. and during our last charade i said that ive been doing this my whole life. so we made a promise that from now on we would always tell each other the truth and the full explanation to why we do certain things. well my dad today wouldnt give me a real reason to why i couldnt spend the night this whole weekend and then i found out he lied to me, and i believe he did. so i told my dad im sorry it had to be this way but we shouldnt talk for a whi.e and that if this was the last time we talked to know that i love him and i wish things could be different. so how do i deal with the pain. my dad hanst really ever been there and i cant lie t myself because a mans word is a mans word and i would never lie to my children because ive had a whole life of lies