a girl or guy who hops happily from oneguy/girl to the other usually when wheeling or doing sexual activities
that girl is such a jollyhopper, i just saw her with two other guys each within five minutes from the other. give her five more minutes and it could be you.
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.