Jennifer Lopez & Casper Smart Celebrate One-Year Anniversary

Jennifer Lopez and Casper Smart appear to be going strong!

The couple took to Twitter to publicly celebrate their one-year anniversary of dating - complete with pet names.

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"BEAR!!!!!!!!!!!!!! Today is OUR's!! Thank you for sharing your beautiful smile with me everyday!" the "Dance Again" singer, 43, Tweeted to Casper on Thursday.

Her dancer/choreographer beau posted an equally sweet reply.

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"Happy 1 yr. anniversary to the most Gorgeous, Kind, Sweet, Funny, Beautiful Lil Bear in the world.... Love Bear," Casper, 25, wrote. "#October25."

The dance-loving pair -- who first went public with their relationship in November 2011 (four months after J.Lo and then-husband Marc Anthony announced they were ending their 7-year marriage) -- has faced criticism for their nearly two-decade age difference, but it doesn't seem to faze either one of them.

Back in January, Casper took to Twitter to defend his love, writing,"Age, status, n opinions of others are irrelevant. Our hearts are endless and our souls infinite..."

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-- Erin O'Sullivan

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