Seeing the rhythm game cabs filled with groups of players.
Sitting alone while waiting for my turn as the groups laugh and have fun playing.
Imagining trying to talk to them and join in, but being too shy and scared of being rejected.
Getting cut in line because a couple from the group needs to play duo.
Asking the rest of the players to play duo so we can play four songs, but nobody wants to, so I end up playing alone with only three songs.