My sim won’t do the woohoo/tryforababy/cuddle action

I have 2 married sims in my household, and I've been trying to get them to have a baby together. But, when I try to get them to WooHoo, Try For Baby, or cuddle they just go to the other sim, talk for a second, and do a little dance. Both of my sims are adults, so I'm pretty sure they would be able to WooHoo. The beds, showers, etc have been replaced and moved. No Mods.