Reddit, My gf is on her way to a club, and I'm home eating shit. Am I a good or bad boyfriend?

Basically, I'm broke. My girlfriend is going to a club with her friends, which is free for girls and costs $15 for guys until midnight.

I told her to go and see her friends, while I'd stay home and she would drive by later.

I didn't want to take her fun away, and I trust her.

Edit: Sorry I a word there.