Yeah that was my first thought too. Was like, if sex is combat… wait how are there any STRAIGHT Klingon men actually??? Nothing more honorable than defeating a stronger foe in combat.

Also with how ingrained group dynamics are in Klingon society, I’d be surprised if poly group relationships weren’t commonplace.

Ultimately I like to think its never been brought up before because the Klingons are an enlightened, advanced civilization and the idea of two dudes banging doesn’t even occur to them as dishonorable or wrong.