Shinoyama-kun, you have much to learn about girls (in no specific order): A female being a lesbian does not necessarily mean she hates or has nothing to do with males, unless she explicitly says so * most males seem to (perhaps unconsciously) APPROVE of "girl-on-girl" action (to whatever degree) * it's possible that Hime-chan and Kaho-chan are perhaps more "bi-curious" (if not "bisexual") that outright lesbian (there is a difference).
Notwithstanding all that, you've got two (bi-curious/bisexual, whatever) girls willing to have *cough-cough* threesomes with you ... GO FOR IT! DO NOT HOLD BACK - IT IS YOUR DESTINY (you Lucky Bastard).
"Traitorous sluts", huh...When the pair you thought were a lesbian couple turned out to just be a pair of sluts who hunt together, must have been a devastating betrayal to the guy.
"Loves watching girls make out"? Well...Who wouldn't?
That ending though. Well...They're certainly close. Almost to the point that you'd think they were a couple, yes? And hey, if they don't want to get a boyfriend, they may as well get a guy they can share together, right?