I'm surprised it has taken so long for them to become like this... makes me wonder if you've been missing some signs. Or perhaps not, and it has just started but good for you for removing them. Time to keep them apart, as they probably should be - like most other snakes.

Regardless of their sexual orientation it is clear someone(s) isn't happy and is showing it very clearly.

All the best!

(And hey, with that tub idea suggested before, you have more room for more snakes... so...)