Responses

That probably referred to the old society belief that a woman of breeding should just lay still while her husband mounted her, where as a paid woman or a mistress enjoyed herself and liked the act of sex. A lady only endured sex to give her husband an heir, they aren't supposed to like it. So, the fact that Alphonse loved his wife and didn't seek a mistress could only mean Chloe wasn't a lady in the bedroom.
Yo honestly how is someone vulgar in the bedroom as long as it's all consensual pple can like what they wanna like. If you're gonna assume that Alphonse likes to get stepped on, even tho it's hypothetical, it's his personal business and if all parties involved are consenting what does it have to do with you? Let him get stepped on he wants it.