Unexpectedly finding something you need desperately in a place you hoped it might be but didn't think it would be.
Derived from the sense of relief you get when you desperately need a beer and you open the fridge not really expecting to see one but finding one anyway right at the back behind the pickles.
I was late and running out the door, but couldn't find my car keys. To my beerlief, they were in my pants pocket.
Someone who jumps from one relationship immediately into another one.
Serial monogamists can not stand to be alone and often suffer from vast commitment and insecurity issues.
Because they jump into relationships immediately after the previous one has ended, serial monogamists typically don't take the time to reflect on their behavior or why their previous relationships failed; thus, they end up making the same relationship mistakes over and over again.
Person 1: Damn, Dustin already has a new girlfriend?! It's only been two weeks since he broke up with his fiance! I think he's a sociopath.