That happened to me once, and I found it quite hurtful, because we had become really good friends. Having written that, I too have been on the other end of unrequited love and understand how painful it is.

It has happened to me... In different ways with different people..

The best I could do was not to judge their feelings, therefore try to avoid hurting them.. I stayed friend, even if they dropped the friendship between us...

Except for when their feelings turned to obsession, which made me drop the friendship.

Well, if being around me is going to cause my friend way more pain than it's worth, I'd want them to step back. But I'd also want to know why rather than have a friend just mysteriously ditch.

heartbroken just the same

I would understand. I have had feelings for women who did not or could not love me the same way back, and it hurts. I can see why one wants to get away, or move on. In my case, though, I do not do this. Rather, it is usually she who defriends me. But I understand that, too.

It would be heartbreaking. But I would understand their feelings if they told me about it, instead of slowly decreasing contacts and not talking at all.

Sad when it happens, just wish them peace. Not being judgmental but allowing them to manage it by their own means is better. Any help will be viewed as pity or as a means to reciprocate and it can get nasty.

Hmm I'm not sure. As a guy, I'd just suppress those feelings and not talk about it, so if a female friend did that to me, I'd be upset and angry probably.

It might hurt, but under the circumstances, it might have been the wise choice.

Very understanding.They cannot help who they fall for.

It happened many times, and I lost their friendship

Happened to me once and we are no longer friends.

I don't know, but unlikely to happen

I'd understand. If I cared for them, I'd wish them the best and watch them drift away.

It's hurtful, very much so.
It also means that their regard for you as a friend is not as important as their "crush" on you.

I'd feel awful , but I wouldn't push.

This is not a problem I think I will ever have to face again. But to answer your question, at this point not fucking remotely.

eh ive lost friends over dumber things.. like not being a partier or finding out your friend that you cared about turned out to a nympho and didnt want drama for messing around with hundreds of men and pedo men.