By Lisa Respers France

PHILADELPHIA (CNN) — Oh *NSync you just live to tease.

The former boy band has got to be fully aware their fans badly want them to reunite and make new music. There was a frenzy among 30-somethings in 2013 after the group performed briefly at the MTV Video Music Awards.

Now Justin Timberlake, Lance Bass, JC Chasez, Joey Fatone and Chris Kirkpatrick are once again raising hopes. This time with a photo from Chasez’s 40th birthday on Monday. Timberlake documented the milestone with an Instagram image captioned “JC’s 40th… And, if you don’t know now you know…”

Naturally fans immediately started wishing for more. One person tweeted “This low key @NSYNC reunion brings tears of joy to my life & hope that there will be a reunion tour in our future!”

Keep the faith *NSync fans. With so much from the 1990s coming back these days, there may be hope.

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