...go together like a horse and carriage

Okay, all of the females around me are suddenly getting engaged, like there's something in the water. I found out about the umpteenth one today at work - one of my coworkers was persuaded to go out looking at all the houses lit up on sunday. They came upon her boyfriends fathers house, and he (her boyfriend) had set up the words "will you marry me?" in bright christmas lights. That's about as sickeningly sweet as it gets.