How to cope with the loneliness after a party?

It's universal, when people are having fun time flies by and no one wants it to end. But to focus on the ending so much that you don't even want to go to the party in the first place or have stomach pain towards the end of it is just terrible to go thru all the time. Maybe you can start thinking some positive reinforcement when you find yourself starting to worry try to change your focus to "I'm going to a party tonight and I'm going to have a great time. Yeah, it'll end but that's OK. Because we can always have another party again." I don't know if that will help you or not but it's worth a try a lot can be changed if we can change our thinking.

Jam it back in, in the dark.