#4 Carmella and Big Cass
Another relationship that was created in NXT was that of Carmella and Big Cass. The two stars made up two-thirds of Enzo and Big Cass's stable since Carmella worked as the manager of the tag team for a number of months before it was decided that the duo would be promoted to the main roster without The Princess of Staten Island.
Carmella remained in NXT for a few months and was later promoted to SmackDown in the WWE Draft back in 2016, whilst Cass and Enzo remained on RAW. Carmella has since become the most successful former member of the group since she a former Women's Champion whilst Cass and Enzo have both been released from the company in recent years.
Aligning them together in NXT led to a relationship between the two stars, but when they were drafted apart, it obviously caused issues. Carmella has since moved on to a relationship with WWE commentator Corey Graves and was recently drafted to SmackDown as part of the 2019 WWE Draft so that she could remain on the same brand as her boyfriend this time around.