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Is Rob Kardashian mourning happier times with ex Adrienne Bailon? Just days after the "Uncontrollable" singer, whom he dated for two years from 2007 to 2009, expressed regret for ever getting a tattoo of the E! reality star's name on her butt, the 26-year-old sock designer posted a throwback picture of them via Instagram.

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In the old snapshot, Kardashian is seen with his arm around "The Talk" co-host, now 26, who is happily reading something on her cellphone. His little sisters -- a much younger-looking Kendall and Kylie -- walk next to them. "Me chillin with some of my shorties way back when," the "Keeping Up With the Kardashians" star captioned the pic.

The Throwback Thursday photo comes shortly after the former Cheetah Girl star revealed on "The Talk" that she's in the process of removing her "Robert A. Kardashian" tattoo and deeply regrets the ink. (During their courtship, the pair both got each other's names tattooed on themselves -- Kardashian still has "Adrienne E. Bailon" on his rib cage).

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"I've gotten pretty bad tattoos before," Bailon told co-hosts Tamar Braxton, Tamera Mowry-Housley, Loni Love and Jeannie Mai. "Everybody knows I have the ratchet-iest booty tattoo of an ex-boyfriend. I don't know what I was thinking."

She added, "It's awful. Ten-letter last name, Kardashian. It's pretty bad, yeah. Now that is a ratchet tattoo. I made a very bad decision. Don't follow my example."

During a recent episode with "Keeping Up With the Kardashians," Rob told stepdad Bruce Jenner at a family dinner that he does indeed still have the tattoo, but it's shifted a bit since his weight gain.

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"Mine's like in the middle of my stomach," he laughed, as stepbrother Brody Jenner looked on. "Like literally my whole stomach."


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