Why do guys make you fall for em. mess about with ur feelings?

More then 4 years known him been with him about 2 and half ..why do guys make you fall for em. mess about with ur feelings & tell soo many lies because he know's ur under his control he know's e's ur everythin he know's u WILL believe everythin he say's bcz he is the first luv. But when u start havin hate/love for him he be's all nice to make u fall agen & convince you he has changed. And when you cant take it anymore you leave him. have pure hate for them even tho deep inside you might hav a bit of love but u dont show it because you know he will take advantage of it,, he tries to convince you that you still luv him but you dont admit it and just cant take it noo longer. Then he start's swearing and being nasty just because now he know things aren't goin to go his way.. He thinks she will go with another guy wen he was the only one she could ever luv she cant luk at another in that way and doesnt want to. She wishes he could hav been the guy she thort he was, she wouldn't hav changed anything about him except the things she found out about him which wer all lies.. She tries to get over him and does succeed as long as no1 mentions nyfn about LOVE or anything lyk that, its been about 10 months she thinks she has got over him bcz she has just made herself stop thinkin about him ignoring anything to do with Lovey dovey things,, but one day she hears a mate talking about her boyfriend and how they met how lovely it wz.. She listens deep into the convo she remembers everythin and ends up crying over him &miss the old times,, she did miss him before but tried to hide the love feelings with all the hate she had for him,, but she suddenly started remembering the old times now,, does this mean she still luv's him because she doesnt knw herself wt she feels about him. or is it just sumfin she remembered she'll get over it?