Thanks for the replies.

It's been more than a week and I'm still thinking about it. Even I'm surprised as to the extent this has affected me. I know it has alot to do with the fact that this guy is someone I've known for almost 15 years so it's just sad and upsetting that I look back on all this and think what was I doing even associating with someone as nasty as him. I'm annoyed with myself that I tolerated so much nonsense.

Just telling stop to someone doesn't work as inherently they have issues. I suppose there's a small part of me that feels sorry for him but after what I've been through I can't do this anymore. What's more the fact that he hasn't come close to apologising reflects on the person he is. Infact, even during the trip after that night he was still stirring and pushing it by sarcastically telling everyone how I hated him and jokingly said he was scared I might hurt him etc. Just more childish levelling and attention seeking behaviour. It's the whole act of I have to act like an alpha male and put others down so I look cool and come across as dominant. There have things that I could have brought up about him but I'm not a child and refuse to play those games as I know if I did, it would just go back and forth anyway.

However, I have decided to still go on the trip. This is a place that I've been looking forward to going and I'm not going to let him, especially after what's happened, affect this. Might be tricky having to deal with him on the flight there and back and we may have to stay together somewhere for a night or two at a hostel but I'm ready for any kind of confrontation that may arise. Any further advice on how to deal with this scenario?