The experts on the show spend monthsgetting to know candidatesbefore finding them their absolute perfect pairing.

“And it’s a missed opportunity.”

However, “sometimes they don’t even listen to us,” Dr. Coles admitted.

Dr. Viviana Coles on Married at First Sight

“If they’re being too defensive, that’s a big one,” she said.

The second biggest sign is “shutting down,” Dr. Coles said.

“Avoiding the other person is probably not a good sign either,” she added.

Dr. Viviana Coles in a therapy session with a couple on Married at First Sight

The reality series doesn’t make it easy to stay away from your significant other, either.

During every episode, producers are standing just off-screen.