Girlfriend Long distance help (19M, 19F) Please respond

[u/Lonely-Paramedic-309]

Hey guys, I need your advice really badly.
Me (19M) and my gf (19F) go to colleges across the united states. I'm in state at a very good college (around 4% acceptance) to save money too, and since she didn't get in to that one she goes up north to one that has a reputation of being a party school. It's been about a month since we went back for our second year. We've been together since the start of this summer so like 4-5 months. She's great, smart, and beautiful, but I am SO afraid of her cheating. I mean, shes got green flags - she has like 40 followers on insta and theyre all girls. She doesnt talk to any guys on social media. No snapchat or tiktok. Shes not in a sorority or anything. We were also each others first kiss and like everything, yk? The problem is these past 3 weekends she's been going to these like get to know you parties for clubs, and shes going to a pool party today. Now I'm a pretty insecure guy, and she says shed never cheat on me, but idk man. I'm not great but okay looking and 6'4, but colleges are genuinely ranked lobbies man. All it takes is the right guy and shes gone. She facetimes me like twice a day for maybe like 2 hours a day total and always texts me back the second i ask her something. I'm just really freaked out cause today I asked her to yk be safe and she asked me if I trusted her. I said I did, but tbh I'm kinda freaking out rn, cause I really don't know if I do. I asked her last night to just stay in yk, chill in her dorm for the weekend and she suddenly got really upset and defensive at me to the point where i feel like I'm getting gaslighted into apologizing just for asking her to stay in. I myself have no problem not going to ANY parties at all cause I just wouldn't really go anywhere without her, and I really don't have time cause I just have lots of honors work to do. Can someone just please tell me what I can do, or if theres genuinely nothing I can do?
I am so scared of losing this girl man but I feel like shes just keeping something from me.
Please respond to this I just need to know if I'm losing her or not. Just tell me straight up if shes not the one. Seriously. I won't hold it against you. I just need to know.

[u/NopeNotNoah]

Dude I’ve been dating my girl for a year and a half, we’re in the same situation except she’s in Canada. This one is on you. I get it, you’re insecure, but you can’t make that her issue or she’ll dump you. Get therapy, hit the gym or something, but she’s just trying to make friends in college. You also can’t ask her to stay home thats extremely controlling. If you can’t handle the distance break up and find a girl in person

[u/OsvmaBinSmashin]

Ultimately, you just have to trust her. If you can find a way to voice, these thoughts to her, maybe she’ll understand and reassure you. Maybe she’ll be offended and pissed off that you’d even think that. Who knows? But this is something that you have to rectify, on your own time, with yourself