Why am i furious?

God i hate it when i realise how ridiculous i am.

Robert who i am sure you all know about by now, my other best friend kerri and roberts boyfriend Adam, are all out clubbing without me, i just found out on facebook!!!
I am furious, i have a knot in my stomach my chest is tight and i feel physically sick.
The thing is Kerri asked me if i wanted to go to Heights today and i said no because i'm not drinking, but i am so angry she has gone without me.
They've never done anything without me before, Kerri and Robert that is, its like happened 3 times in the last 5 years of us being friends.
Oh its awful.
Why am i bothered, i didnt WANT to go, i hate Adam and i'm not going to hang around with Robert ever again.
Kerri hates them being together more than i do because Robert isnt going to her birthday weekend cause Adam has made other plans.
Arghhhhhhhhhh i feel mental!

I'm going to go to bed, cry about it for a bit then wake up in the morning and forget about them!

Try to keep in mind that you were invited and turned it down. That doesn't mean they have to cancel their plans. They are entitled to go out if they want to.

I'm trying but it doesn't feel like that.

Did Kerri tell you she'd be with the guys? or sneak out?
If she sneaked out, she's no friend.
Nothing to discuss.
Move on, though it hurts.
IMHO

What about suggesting other plans instead, for the evening?