Wife or side line hoe my scorpio man has me mixed pls. help...!?

I've been off and on with this brother for about 17yr. We just got back together and dam he still do what he do but now its better because now he's more open with his fillings and he knows me like i know him the thing is he has a girl he stays with but he calls me the wife he wont stay the night any more and go days with out a call and all they do is fight crazy he has never hit me when hes not around that's when i fill like the side girl he told me when i spend her money I dont trip then but the money aint that good but he never tells me no when i ask unless its about him spending a night at home