Well I'm definitely not considering doing anything now. If it were to happen now I'd never be able to trust that it wasn't simply because he's feeling lonely and confused after the split. I want to be there for him as a friend right now, he needs someone to talk it over with and his male friends were all so busy cheering him on to split up with her that I don't think he really can talk with them about it.
I like this girl and we were friendly over the summer, but I don't think she is going to remain a long term friend. It was friendship by association, not because we're particularly fond of each other. That said I respect her and going out with her ex would be sticking 2 fingers up at her wouldn't it?
He has asked me if I would like to go on a ski holiday with him at Christmas. Originally booked for him and the girlfriend but obviously she won't be going now. I love skiing and want to go, but at the same time his ex is going to find out I'm going. She knows we are still friends and still hang out, but is it a bit horrible to take her place? They were so looking forward to this trip together.