Or even worse, they are actually disagreeing on something important to them.
"I belief strongly in God and my faith is very important to me."
"I think religious people are all crazy and stupid."
"Oh, look at them flirting. I'm sure they will be married soon!"
It's also frustrating when they start passive-aggressively pressuring the "couple" to pair up.
"You get along so well, so we decided you should share a room."
"We argue constantly."
"Yeah, isn't it romantic?"
"No. It's really stressful. I don't like spending time with them."
"You can thank us later."