I miss him

So uhh story time

I know my best friend for 4 years now, but we graduated and we're on different schools now and I can barely see him, but a few months ago I asked him to become partners since I really like him (still do) and he accepted... He was really cute and nice with me on Discord for a week or so- and then he stopped talking to me... This was on January or so- When March was starting- I asked him why wasn't he talking to me at all- why was he treating me just like any other friend, and I found out he doesn't like me back and he just accepted because he was "too nervous to think straight"... 

However- the point is I'm still really sad since we broke up that night, and I don't wanna talk to anyone at all, not even my school friends... I feel empty, like something's missing, because me and him aren't the same friends as before and it hurts me a lot... 

My friends say he's a bad person for playing with my feelings, but I still love him and whenever he texts me I'm so happy... I saw him the other day and I t was really fun- he bought me an ice cream and said sorry for everything, but I still feel empty inside, like... I don't feel anything anymore, and whenever I do it goes away quickly... I just feel how I miss him

Any recommendations...?