Kyle should have asserted his status as her husband at least physically after Edge all but claimed he "owned" her by referring to her as "one of mine". There are implications in that line, but Kyle had his lips firmly planted on Edge's ass, so he just sat there and allowed Edge to be as controlling and suggestive as he wanted to be. That's how relationships fall apart, hence Lana's outrage. If you're married and a situation like that happens, you step up, and do not hold back because of some misguided spin on decorum (not meaning your idea personally).