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.

Spirit and Frontier Airlines have restarted discussions about merging, as Spirit navigates debt restructuring and potential bankruptcy. These talks are in preliminary stages and may not result in a deal. Previous merger attempts between the two carriers were halted when JetBlue made a more appealing offer to Spirit shareholders.