Some people know how to have fun with you but not how to stand beside difficulty.

There are people who are excellent company and cannot be present for anything heavy. They change the subject, they go quiet for a month, they turn up again once things have improved. This is worth knowing rather than resenting, because it tells you what to ask of them. Not everyone has the same capacity, and expecting a light friendship to carry weight sets both of you up to fail.

Sort your friends by what they can actually do rather than by how close they feel. Take the fun to the fun ones and the trouble to the ones who can hold it. Right expectations preserve more relationships than confrontation does.