When someone adds you randomly at the end of the game and they be like

Or the other option, where they were salty all game, and add you just to flame you then removes you.

...no?

I have someone like that...

I know you for 35 minutes, I thought we have something special.

For real, I had someone ask me for my phone number after playing two games with him.

Not exactly on the same topic, but I played a supp game and went 0-9 (the adc had been a last pick who couldn't adc but got stuck with it so even though I hate playing the blame game ... that twitch was so bad). After game, I got a friend request and expected it to be an asshole trying to flame me but accepted anyway. No he was actually happy with me and friending so he'd know if I was online in the future. Basically my point is people friend people in some strange situations.