i need help :(

I have never been so depressed in my life , i have no energy for anything ,i am so unhappy.like today i went to the beach and all i did was think of him. i hope he misses me and remembers me .. i feel so lonely right now, i wish someone would help me though this ,i just cant take this pain and depression anymore ,i cant believe i fell deeply for him , i never thought i could feel this way for someone , even though he has hurt me so much throughout the relationship . never understanding me and calling me creepy whenever i felt sad . but thanks everyone for your replied they have each helped me in some way .