Piggy in the middle

[basketweaver2012]

I know I'm being petty, so I've come here to be told so and to sort myself out....
The situation is that i have invited my best friend to a formal charity do that a colleague is holding next week. Fancy ball, nice meal etc. it's quite expensive too.
It's not a works piss up and most people there will be in couples as apose to a group of people going out.
I asked bf as something we could do together which is a bit different and as my plus one.
Since this was arranged, I did a little bit of matchmaking between her and a colleague and my work and they have hit it off really well and are in regular contact, speak/ text lots and have seen each other maybe 3 times for an hour or so.
Bf asked me in Friday if her new fella could come along and then 3 of us could go together. i said that bearing in mind what type of do it was, I didn't really want to do that as I'd probably be sat alone most of the evening. She seems to be head over heels with this guy already and I didn't want to go and feel like I was in the way.
She said this was ok however yesterday again asked me and said could we all go and we'd have a laugh together.
We probably would to be fair but I can just see me say there in my cocktail dress looking like bloody Cinderella as no ones speaking to me as they will be chatting away or dancing and ill look like a spare part!
I know it sounds so childish, but I feel really pissed off that I invite her to a posh do and she wants to invite her new fella along.
If it was just a pub do, I wouldn't mind at all but I don't know anyone else that's going.
Am I being ridiculous?

So she wants to bring a date along despite the fact that she's YOUR plus one? YANBU and tell her no.

"She said this was ok however yesterday again asked me and said could we all go and we'd have a laugh together."
After you'd already said no and explained why not? Bloody rude of her. Can you invite someone else instead of her, and she and her infatuation can go to the pub with the light of her life instead? Because she's probably going to moan at this charity do now.

I did say that he could have my ticket and they could go together instead but she said she would rather go with me than me not go. But obviously she wants him to go still and as it's our work thing, there's nothing stopping him getting his own ticket anyway. Think I've just seen my arse today and not up for going at all now

I would find someone else to go with. You'll have a much nicer time. Stick your guns. YANBU.

As he is a colleague I am sure he can source his own ticket and plus one ticket.

I would invite someone else as your plus one. And stop feeling as if you are being petty and childish, she is the one in the wrong here. Her harping on and putting you on the spot like this is very rude, as is her obliviousness to the fact that you'd inevitably end up sidelined and feeling like a gooseberry.