<human>: Hello reddit! I'd like some advice on my little issue here.

So this girl and I are as close as we can be without being an "official" relationship, mostly due to parents' disapproval etc. Anywho, she has a Sweet Sixteens party coming up. She plans to invite most of her friends of course and this is where the problem lies.

She met this other guy last summer and they hit it off as good friends, and to my knowledge, that's all they really are, friends. Over time, she developed a keen interest in him and it's come to the point where it has caused some friction in our relationship. Nothing too drastic but it really halted our momentum, so to speak. We've more-or-less cleared it up and moved on.

So her party is coming up in less than a month and after asking her, she seems unsure of whether to invite him or not, seeing as how we're practically boyfriend/girlfriend and it would be very confusing to have him there.

Reddit, what would you do? Would you go to this party, ignore the fact that this other dude is present, or even try to befriend him, and assert your position with your girl? Or not go to the party at all, let her have her fun with her own friends, including this other guy, in an attempt to avoid a competitive atmosphere that would most likely ensue between both of you guys?

Adittional note: I'm not a party guy at all, and I'm not the best of friends with the majority of her friends so the latter really appeals to me atm. I'd love to hear your thoughts, thank you!

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: my SO had feelings for this one guy, they are now just 'good friends', and she might invite him to a party along with me, basically her boyfriend.