My so called friend with the same name is taking everything from me?

He's taking my jokes, my personality and my friends. Every time we hangout he'll show me a picture of the girl I like with his arms around her to make me feel jealous as he said " You jealous?. With a dirty grin. Now ever since he's been taking my stuff he's been way more popular than me, taking my friends and the girls I like. All the time we're at the same party or bonfire I hear The other Malik is cooler than that one, and I like that one than the other one. It really piss me off. What should I do? I don't know what to do. Also when we were young he wasn't that cool as I was. If it wasn't for me to take him from the wrong group with bad influences he would of never got good grades, girls, and friends. Once again what to do?