You Fuck Hot Stuff? I've Got a Fucking Boyfriend!

Lucy found messages on her boyfriend's phone from a couple of years before. She decided to forgive him and give him a second chance since he promised it would never happen again. He then called last Monday to say he had drunkenly kissed a girl at the weekend. Lucy broke up with him, but he now won't leave me alone. I stupidly booked a holiday with him a couple of weeks before - which is all in his name. Now he wants to use this to persuade me to amend things with him. But she has asked him to cancel the holiday, but he is refusing. Leah says: 'You're not doing anything wrong. You're not acting on these feelings'