Having someone around constantly throughout teenage development and then not as a young adult is rough.
Everyone struggles to get their "game" back after a long relationship, but you're young. You'll relearn how it all works (Tinder probably wasn't a thing when you were 15) and find a new girl.
Mourn, mourn everyday for a week if you must. But at some point you'll realise that its left you broken, and thats the time to take some action and put yourself back together. When you're broken, its the best time to put yourself back together however you want.
