I don't see how this is a diss. Seems like dude tapped out. He admits that he invested a bunch into the chick and James took her from him. That's self ether if anything. In rap terms the nigga said:
I was good to that chick and got her cause I was rich
But James, you came along and took my bitch
It don't matter, I gotta better chick and plenty mo' dough
So don't send her back here James, you can keep that hoe.