Stevie Nicks and Lindsey Buckingham are sparking reunion buzz after a cryptic billboard appeared on Los Angeles’ Sunset Boulevard this week.

Shortly after Stevie Nicks posted a lyric from the Buckingham Nicks song "Frozen Love," Lindsey Buckingham finished the sentiment.

Fleetwood Mac’s Stevie Nicks and Lindsey Buckingham appeared to tease a potential reunion with cryptic Instagram posts. On Thursday, Nicks, 77, shared an Instagram post that read: "And if you go forward…," which may be referring to the lyrics from "Frozen Love," a song the band released in 1973.