datist
Rapist on a date
Datist: 'Flowers, check. Chocolates, check. Rohypnol, check. Love is in the air tonight...'
serial datist
A person who feels the need to constantly be in a relationship or to be dating another person. This relationship/ dating usually ends after the honeymoon phase ends
"Did you hear Nicole is dating John?" "I heard, but didn't she just break up with Phillip?" "Yeah dude, that chick is a serial datist!"