situations doesnt go easily

Sometimes my situations can go really bad....i hate it when girls come and go cruelly....its like not eating for two months or more...Sometimes its the girls who are the ones who doesnt know what they are doing....they leave us and then they try and have another relationship with someone and says the same damn things that they said to you during you guys were together....hmm, it's like I've lost so much already...the girl won't even care what will happen to me in the end. It's so hurting...I don't know what is the girl even thinking about.