Coming in last, we've got Vicki and Jeremy. These two aren't only the worst couple on the show, they're also one of the most toxic. Vicki and Jeremy start hanging out after Jeremy and Elena's parents die. Their time together is marked by drug use and hook-ups. Jeremy instantly falls in love with Vicki and wants to be in a serious relationship with her, but Vicki tries to keep things casual between them. This is because she's truly in love with Tyler Forbes, the son of Mystic Falls' mayor.
First off, centering a relationship around drug use, especially after undergoing a tragic life event, is not healthy. Jeremy is simply looking for an escape and someone to comfort him. Vicki knows this, but instead of being mature and explaining to him that it'll never happen, she strings him along, then abandons him whenever Tyler comes calling. Secondly, Jeremy shouldn't enter into a serious relationship while still grieving his parents. Vicki's not doing so great herself, what with her parents' abandonment and her lack of self-esteem. These two are simply bad for each other, but Vicki, being older, should be striving to protect him.
