For the past eight years, in fact, Spirit Airlines and Frontier Airlines have been the will-they-or-won’t-they couple of the airline industry, having repeated merger discussions

Frontier Airlines is exploring a revived bid for Spirit Airlines Inc., the Wall Street Journal reported. The budget carriers recently held talks, though discussions are at an early stage and may not lead to a deal, the WSJ said, citing unidentified people familiar with the matter.

The founder of JetBlue Airways (JBLU) added insult to injury following the airline’s ill-fated merger attempt with Spirit Airlines (SAVE). David Neeleman, who left the company in 2007 and now runs Breeze Airways,