Jennifer Lopez, Casper Smart Adopt Puppy Together

Casper Smart and Jennifer Lopez attend the 2012 Vanity Fair Oscar Party. Jeff Vespa/VF12/WireImage

Jennifer Lopez is expanding her family with boyfriend Casper Smart! The couple of more than a year recently adopted a puppy together — a little brown boxer they named "Bear."

Smart, 25, tweeted the news on Thursday, Jan. 17. "Introducing the new addition to the family…" he wrote alongside a picture of the pooch. "Welcome home."

Lopez, already a mom to 4-year-old twins Max and Emme, her kids with ex-husband Marc Anthony, retweeted her beau's announcement, with an added note about the pup's name. "So happy!" she wrote. "LilBabyBear. Could get confusing!" 

Jennifer Lopez Dog

"Bear" isn't just the couple's pet's name; it's also their pet name for each other. Both Lopez and Smart have used it in the past as a term of endearment on Twitter.

"BEAR!!!!!!!!!!!!!! Today is OURS!!" the "Dance Again" singer, 43, wrote on the micro-blogging site for her one-year anniversary with Smart in October. "Thank you for sharing your beautiful smile with me everyday!"

Her man responded in kind. "Happy 1 year anniversary to the most gorgeous, kind, sweet, funny, beautiful lil Bear in the world…" he said on Oct. 25. 

Adopting a puppy together is a big step, but Lopez and her love seem stronger than ever these days. "[Casper's] fantastic; he's like my best friend," the former American Idol judge told Harper's Bazaar in a recent interview. "I can tell him everything, when I'm feeling down, when I'm feeling good. He gives moral support, endless love and support."

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