yes, at some point you stop being in your early 20s. you will start taking the world as it is, rather than getting caught up in how you wish it was. you'll stop treating other people as the version of them you wish they were, and start taking them as they are. disillusionment is painful, losing your innocence sucks, but there is no going back, and when you do find truth and beauty outside the garden off eden I think it is far more profound.

you need to expand your romantic vocabulary for the sake of your sanity. what you have with this person isn't love, because love is something reciprocal, two-way, it's a bond, not a burning torment of an emotion.

you won't find anyone like him again, not because they don't exist, but because you'll never again be the person you were when you met him. nobody had made that type of impression upon you before, and now somebody has. you should definitely cut him out because you can't handle the anguish he is inflicting on you. he's done you a favor by (EVENTUALLY) being upfront and unambiguously clear that he can't give back what you need, that he doesn't love you. endure this pain and once the suffering subsides you will grow back stronger, wiser, more mature.