Decision fatigue is real, and dinner comes at the end of the day when you have the least energy for it.
The 3-option rule
One person suggests three options. The other picks one. Next time, swap roles. It's quick and it feels fair.
Keep a "rescue" list
Write down five meals you can make in 20 minutes from things you usually have. When nobody can decide, pick from that list.
Decide earlier
The best fix is not deciding at 6 pm. Ten minutes of meal planning on Sunday means the decision is already made.
Use what you've already saved
You probably saved dozens of recipes you meant to try. In Yumpair, your cookbook is shared, so either of you can scroll it and add something to tonight's plan.