Is it normal i've resolved myself to being alone indefinitely?

Boy meets girl in high school, incredible Junior/Senior year together. Graduate, begin attending a local college together. Girl enjoys it enough to get keep at it, boy hates it. Joins Army VERY MUCH against girl's wishes because he thinks it'll be best for him, not necessarily both of them, and wants to keep it going long distance for a few months. Girl loves him, at basic, early December, she breaks it off because it's too hard to be alone back home always thinking about him.
Roughly 2 years since. Boy left service, using military to pay for college, enjoys it much more now, misses girl. Neither have dated anyone else, as far as social media and boy know. Girl blocked all forms of communication after boy came home for New Years, professed his love, they shared an amazing 2 days before returning, then she said never again because it hurts too much and they've not spoken since.
He loves her too much, and no one has been anything close to what he thinks of her as. No way to talk to her without seeming like a stalker/creep now since she's blocked all forms of communication. Can't even be attracted to anyone else, and has no idea how she feels aside from most likely apathetic.
Boy functions normally but is concerned he'll never find another one quite like her. Boy is pretty certain being alone might really be better than being with someone not her.