Basically a girl who is a simp. She puts the guy before her in a relationship. Girl simps are very uncommon
Ex:

Ally: Hey, Ian we should hangout later
Ian: nah I’m chilling with the bois later
Ally: ok coming over

Ian: you are such a Girl Simp, we are done
by Ianishello February 18, 2020
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When a female, usually a Caucasian female, comments on another females Instagram post right after she posts in the hopes that she will comment on her post to try and bulk up her comment section.
Girl 1: omg did you see how many comments Sarah got on her last post?!
Girl 2: yeah she was white girl simping

Girl 1: makes sense
by Mikeock42069 May 7, 2020
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When you're a girl simping over a boy who broke up with you because he lost feelings for you but all you wanted to do was spoil and love him but now you cant do that. You're probably crying over him at 3 in the morning and hugging his hoodie that still smells like him. You realize you're gonna be alone forever because all the dudes you ever liked never liked you back.
She knew Simp Girl Hours were coming soon after she got rejected by the 2 dude that month.
by wow_its_late April 29, 2020
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