<human>: Summarize the given text in a few sentences.

Hey guys, I'm a senior in high school and my gf of 9 months, who incidentally had also been one of my best friends for three years broke up with me a month or two ago. I was doing pretty well getting over her and things are finally starting to warm up/be friendly again. But then today she asked me if I'd be okay if she asked my best friend to prom, as a friend. I told her I'd be upset, but it's unreasonable for me to get in the way of what someone wants. I haven't seen my friend yet (it was at the end of the day) but I feel like absolute shit, and the chances of him turning her down are slim to none. I feel like shit, does anyone have any words of wisdom/advice?
<bot>: ex-gf who I was close to getting over asked my best friend to senior prom as a friend. I feel like shit, any help would be appreciated.