Im stuck

I really havent been feeling myself lately. Ive been slacking in school and not eating as healthy. I dont enjoy work as much as i used to. I ALWAYS have a specific person on my mind thats not in my life anymore. I always think about our moments and i miss him. I try to not think about him but it hurts knowing that i probably wont talk to him again.Nothing seems to make me happy anymore. I feel like im just stuck in a deep hole trying to climb out but once im halfway i tend to slip and fall back to the ground. It kills me that i cant get this feeling out my chest. I just want to cry and cry cause im so confused about my feelings. No matter who i talk to, no one can make me happier. Ive explained my feelings repeatedly to people im close with that im getting annoyed by myself. I just dont know what to do anymore...😪🤕