If my parents get joint custody of me does anyone pay child support?

My parent's are not together no more my dad wants to get joint custody of me I'm with my mom know and they haven't been together in three years or so but he raised me when they were together he's always there and wants me more but my mom does't always let me go so he wants to go to court to get joint custody. Will he pay child support? And when they were together my mom told him my little brother was his, he raised him till he was three years till the truth came out and the real father got full custody of him.

Yup! They have to pay child support.