Thank you! I think it's insane that a whole lot of the top comments are telling OP that she will never find this kind of love again. That's bullshit.

If it were some lonely old man in here, they'd be tripping over themselves telling him not to give up hope, there are people out there for him. Give 'em a young girl who is with a guy they all wish they could have, and suddenly "this is your one and only!".

She could simply be having cold feet, because she is quite young. HS sweethearts often grow apart, though. We can't really know, and telling her to hold on because this is the best she'll ever get is ridiculous.

I'm nearing 26 and I can absolutely laugh about the people I thought were perfect for me at the age of 20-22. I can shake my head at myself, holding on for too long because I would "never find this again". Nonsense. Every partner I've had has been better than the last. You learn what you want, expect, need. You learn boundaries and warning signs and compatibility markers. Personal connection and chemistry are so much more important than a generic "anyone would love this guy!"