Some friends move faster than people "jump ships".
This guyfriend A and I used to be really tight with this group. One day, A and I had some disagreements with them. So in the end, basically A and I left the group.
Due to some "issues", A and I fell out. Next thing I knew, I saw him all pally and all with that group again when previously he mentioned how disgusted he felt with them etc. I guess, some people always remember to have a "back up plan". If one "job" does not work out, it's best to move to another fast.
Or if a girlfriend does not work out, just find a new one or return to your ex. Naise. Now I know what kind of friend A really is.