If the other snake isn't "fighting" back I would have a hard time believing they are both males. When I first started putting my male mojave in with my normal female (she is indeed a lady, probed by two different people) he initially was flailing around much like he was trying to escape, but also kinda all over the female.

I left the two of them alone and he eventually calmed down. My male is eating weekly and is about 900g though.