Can I just get some feedback on this poem please.

Long time/heart break
You know what sucks about falling for a guy is he breaks your heart and doesn't think twice.... he will say he loves you and say your everything but really you mean nothing you are simply one of his girls..... a girl he can call his but he really doesn't want he keeps you on the sidelines because you are what he needs but he doesn't care enough about you he will lie and say things have changed but don't trust it he is just telling you what you want to hear. Don't cry over him because he left. lift your head and set out to show him what he missed out on.