When I started going out alone it was scary! I could manage an hour at most at first. Just had to force myself to be social and always be in set. Eventually became a lot more confident both going out alone and in a group! It's easier to do in a large packed nightclub...you feel less paranoid about people thinking you got no friends. It's also how you frame it too. You're there on your own because you're waiting for your mate to arrive. Nine times out of ten, when you go to a nightclub with a big group, you can lose each other so you're sometimes alone when you're approaching anyway.
Dare you to do karaoke alone....I have, but I'm a crazy mofo