look up any word, like swag:
 
1.
Just like a Chain Smoker, someone who lights up one cigarette straight after the other. In this case someone who dates one person after the other. These relation-ships rarely last longer than a month. Normally Chain Daters hang around together and Chain Date each other- a common occurrence in high schools.
John has had 3 girlfriends in the past month, who also dated John's friends, they're such Chain Daters.
by etaolf December 03, 2009
 
2.
A person who repeatedly dates friends or relatives of former boyfriends/girlfriends
Girl One- hey do you know shelby

Girl Two- yeah isn't she that chain dater who stole your boyfriend then went out with his best friend and his best friend's cousin.
Girl One- yup.
by Sarabeara6393 February 06, 2012