I dont need somebody to being nice with me, to being nice with somebody

Lately,i decide to try to forget my crush feeling to a man. But an idea suddenly come to my head. I think,he shouldnt love me back. If i decide to toss all of my expectation,i shouldnt expect him to love me back. I shouldnt expect him to being nice with me. Its ok, if i the only one who fall in love. Theres nothing wrong with fall in love. I think i shouldnt try to forget him anymore. I just have to control my imagination and expectation. I allow myself to fall in love, but not to do stupid thing because of love. I hope nothing from him, and will not dissapoint when he act cold to me. Because i dont have any expectation that he should love me back or being nice.