Sims in Romantic Relationship Keep Getting Out of Bed (Patch 1.116.202)

My two sims are in a romantic relationship (maxed out). There's nothing in the way of the bed, they are set to their assigned sleeping spot, and there are no radios or TVs. Only one sim can sleep in the bed at a time. If I ask the other sim to sleep as well, one or both of them get out of bed. I'm playing on PC. I feel like this has something to do with the Lovestruck expansion pack, which makes them want to cuddle, but I'm not sure. Until this is fixed, I'll have to get them separate beds, which is unfortunate.