Not what I meant. You asked about friendship that are intense and formed faster than other friendships, and that's what I answered for. And no, you don't break off the friendship. Not unless it deteriorates to a point where it's an unhealthy relationship for one or both of the friends. I believe the people you get to know fast are filling a need, spiritual or other, and that both the friends are having something fulfilled. It's not a selfish, one-sided deal, here.