I think people aren't over it after you are because they were worried for you and weren't given the opportunity to help, so it's like something is missing for them. Also possibly, they were hurt when you isolated yourself for them because the only reason they would do it to you would be if they were really pissed at you, and although they know you aren't pissed at them, their brains still go "what did I do? Why is he upset with me?" and when you're finally available to talk, they want to have the answers to that.
Also, you're important to them, so they want to know what the problem was even after it's over. Imagine someone recovering from an operation, it's over, but if they're important for you, you want to know what the operation was about. Especially if you weren't given the chance to stand there and hold their hand.
Me: 30F, straight
Seamus: My husband, 32M, straight
Dragon: My boyfriend, 29M, pansexual, married to Fox
Fox: My boyfriend, 29M, homoflexible, married to Dragon