When someone, out of lust, passion, or purely romantic love, defecated into a box and mails it to their beloved as an act of symbolism. It is a rite of passage and a signal or commitment to love's truest ideal, which is devotion, which is symbolized by the poop.
"I'm not sure what to do about how to prove my love to my partner"
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.