Oh dude, don't even start with a compulsive liar. Nothing but pain, angst and shenanigans (not the fun type) are down that path,

Do you want to be her friend? Then be her friend. But if you're going to have a hard time getting over your crush, or would be trying to be friends in the hope of taking another shot at something more, then stay distanced.

How much more do you need to know it's over, dude. You're blocked. She's with someone else.

You need to accept it's over or you're crossing into stalker/obsessive territory.

He's emotionally cheating with a scammer, which makes him unfaithful AND a dumbass.

You know what? I was about to say no. Then I thought about it and realised that when I was in my early 20s I was a super active member of a Buffy forum and had friends as young as 14, and now - 20 years later - they're still some of my close friends, I attended their weddings etc.

So apparently yes, given the right context. The group also had lots of people my own age and all the way to to significantly older (again, who I'm still friends with).