Please i need advise..i was with a girl for 2 years..we broke up bcause she is to jelous she wants me back.?

because all we do is argue.its mostly her fault because she is over protective n too jelous..ex- she seen me talking to a girl tht we both know n she broke up with me..because i was talkin to tht girl, i wasent even flirting.we have been through alot, we have fell asleep on the same bed ..she use to make me panckes in the morning she bought me a ps2 n ps3..shoes clothes..etc..shes to jelous though..n she doesent want me to work out because she doesent want girls looking at me while i look healthy..she wants me to be a little bit fat..well yea she wants me back but i dont, i kind of feel better now that im single ..like now im talking to another girl n we r suppse to hang out n im looking foward to haging out with this girl..is that wrong of me..i mean i love my ex but its hard to be with her..i dont know mann..please can anyone give me some advise..