Isn't it a shame when your mates just completely abandon the rest of you for their crappy (not even attractive) girlfriends?

Its happened like 3 times recently and its irritating. They don't seem to be able to realise that they won't be together forever. Abandoning your mates for a bird can never be good, because when they cheat on you (every girl cheats on someone eventually), your mates won't want anything to do with you. At all.

Does this only happen with 16 year old nippers?