I’ve noticed that American movies from the 1940s or 50s have their content “toned down” when it comes to depictions of sex or violence, even in romance where the lead characters kiss (they pause every 3 seconds) with zero nudity except maybe a bra & crime or noir flicks always involving the protagonist/s winning (like the narrative shows police must be victorious rather than admitting defeat towards criminals) to list a few.
They definitely had separate beds in I love Lucy
Keep watching, there are many scenes where the beds are pushed and made together as one (under a single blanket), and even in the later season they had one bed with a full frame that didn’t separate