obvious terminus
The final stop in a love train before it crashes into a wedding. You know it's here when both people are too dumb to realize they're already married.
'We're engaged? I thought we were just dating more seriously.'
'He proposed. I didn't even see it coming. I was busy being too dumb to notice.'
'She said yes. I said yes. Then I realized we're both too dumb to have a life anymore.'