Why do i let it bother me?

I sit here every day and night telling myself that I’m over him, I’m over the loved we so call shared. I wonder countless time was i the fool in the relationship tending to his every needs. I was promised so much at the beginning and like a child i held on to every promise that was made, when i shouldn't have, i should of had my armor up and my soldiers ready for battle. I should have seen the signs of a heart break when his family warned me, i should have seen the heart break when he lied countless time about stupid things...Was i really blinded by love or did i just blind myself? Now that its all said and done he’s gone and didn't even look back, didn't even cared of the damage that may have been done, didn't even think that this was some ones heart, He just up and gone. Its funny you would think cause all the heart break he brought i wouldn't be sad his gone and trust me I’m not, I’m just mad, disappointed, and heartbroken. Never would i’ve thought that if you help some one out that much that they would do you that badly, because of the simple reason that you don’t act the way they want you to but still you put up with there attitude longer then he may have put up with your. Its funny how people change when things don’t go there way, It funny how everything can become a lie at the end of it all and its funny how love can be thrown around with not a care in the world. It makes you wonder, it makes you think...do people ever mean what they say nowadays?