Stars With Boy Band Crushes

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One Direction

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On May 14 at 7 p.m. PT/10 p.m. ET, Yahoo Live will live stream "The Main Event: New Kids on the Block" from the American Airlines Center in Dallas. Tune in HERE to watch!

When it comes to boy bands, even celebrities have their fan moments. Check out our gallery to see who was smitten with the likes of New Kids on the Block's Joey McIntyre — and for anyone who has a crush on NKOTB, be sure to check out their Yahoo Live concert stream on May 14, 2015.