Okay, there are alternatives.
The one bed trope is one of the most enduring romance and comedy tropes there is for making characters deal with unresolved sexual tension. When it appears in clean fiction, the solution often involves pretending that sex and its necessary boundaries don’t exist, which drives me bonkers as that is a recipe for someone ending up assaulted, pregnant or both. If it shows up in the first half of the story, the result can be, “I appreciate your gentlemanly offer of sleeping on the floor,” but if it appears in the second half of a story and a Marriage of convenience has happened earlier, this then becomes the good girl’s version of “how far are we going to go tonight?”
A Convenient Sacrifice The man involved decides to court his wife while married to win her heart, which is kind of sweet, but eventually they end up staying somewhere that has only one bed. So they sleep in the same bed. Without ever talking about sex. I don’t know if Elaina is expecting a stork to fly in with a baby or what.