"Trust thermocline". This happens when people no longer trust that improvements are going to come from #1. Someone whose partner is about to leave them loudly

"Trust thermocline". This happens when people no longer trust that improvements are going to come from #1. Someone whose partner is about to leave them loudly proclaims "I've changed!". Should they believe them? Often the answer turns out to be "no". It's quite difficult to actually build back trust in these situations.