<human>: We were together for 3 months before we went away to our respective schools, but we got really close during those 3 months because we saw each other daily. The I love you bombs were dropped a few weeks before we parted ways and we keep in touch daily whether its a phone call at night or facetime or something along those lines. I'd say we have a pretty good relationship and long distance is rough but we're working at it.

So, to cut to the chase, my girlfriend calls me one night and we chat away as usual. She casually brings up her sorority function and that she wants to take this guy named Mitch, who I haven't met during the time I visited her (she's 800 miles away, so I only got to do that a couple times). Mitch is a friend of her roommate's boyfriend, and this being one of the last functions of my GF's college career, she says she doesn't want to go alone.

She asks me if its okay that she brings Mitch to the function, and I reply with "Yes, it is okay. Although I have to let you know that it makes me feel a little uncomfortable that I haven't met him."

She then says something along the lines of "I understand. I don't want you to be uncomfortable, and I don't want to be uncomfortable either." So I bring up the idea of taking one of the guy friends I did meet when I've visited her at school, telling her that I feel more comfortable with that, although reiterating that she can take Mitch if she wants to, and that I won't be upset with her or anything like that.

To make a long story short, she ended up going alone because she decided she didn't want to go with Mitch or one of her friends. She says she still had a good time, but I can't help but feel as if for some reason I'm in the wrong. I trust her and I don't think she would ever cheat on me, I was just feeling a bit uneasy about the fact that a guy I don't know would be spending somewhat of an intimate evening with my girlfriend that I dearly love.

Could you distill the essence of the text into 1-3 sentences?
<bot>: LDR GF wanted to take a guy I didn't know to a sorority function, told her it made me feel a little uncomfortable but that it was ok, she ended up going alone. Feel guilty.