Not sure what to do...any advice???

So I have a 2 year old son with an older guy that should b a little more mature....n today we went to a birthday party together n he completely embared me in front of his friends bcuz i dont want to babysit his other kid for him to go to a party tonight so hes like u cant get ur stuff n get out...i feel so hurt n used bcuz i bough him a car n give him money left n right for him to run to the bar n stuff n dont make him pay me support i just want to kno if im crazy for puttin up with this