The fear of the number 71 commonly caused by the jshk (toilet-bound hanako-kun) manga chapter 71. Extreme caution is advised when reading said chapter. People with Seventyoneophobia may start to cry when faced with the number 71 and have severe flashbacks.
Person 1: Oh that person has seventyoneophobia? A jshk stan?
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.