How do you get over an infatuation

I was infatuated with somebody....the realtionship is long gone but I cant get over him, no matter how hard I try. I had never felt as strongly as i did for him and i know i have to move on...how can i

no one ever wrote a book on "how to get over a broken heart"..but who says you have to move on? first id like to know how long the relationship has been over, but if you have that strong of feelings for someone, you need to tell them. i mean really think about it. what do you have to lose? i mean lots of people say, no i cant tell them! well why not? i mean in about 20 years, who knows, in the end you will most likely regret not telling them. life is to short to make mistakes like that.

Its been over for 2 and a half months, he has a gf, i have bf....if i told him id seem so weird