Getting over someone?

for 2 years i was hooking up with this 36 year old man from my work. i am 23. anyways i really liked him the whole time but i don't think he ever liked me...we were just like friends with benefits i guess. anyways i stopped it finally because he always made me feel so shitty. he always tries (and often does) hook up with 18 year olds from our work. he treat me like **** also but stupid me stayed around for so long cause i liked him so much. i don't even know why..i just got attached. i would always feel so jealous and not good enough for him. anyways i still have to see him at work and i often still want attention from him even though i don't want to sleep with him anymore. i know this is wrong but i can't help it. he is an asshole and i will never touch him again but im still not over him and still get jealous when i hear he is with other girls. will it be possible for me to get over him if i still see him at work? i also can't get over the fact how i was so stupid to stay around for so long.