Shortly after it was revealed that Sandra Bullock was dating photographer and single dad Bryan Randall, the 51-year-old’s beau was hailed a “family man” who loved her son, Louis.

But now a shocking new allegation has come to light — as Radar claims he once abandoned his now-adult daughter, Skylar, with her late mother, Janine Staten, who was a drug addict!

Eric Engelbach — a close friend of Janine’s — tells Radar the 49-year-old was “never in the picture,” adding, “Just like Janine, he got caught up in the wrong world, but I am so impressed he’s kicked the habit.”

RELATED: Bryan Randall Was Once Busted For DUI — See His Mug Shot!

Additionally, Bryan allegedly struggled with paying child support when Skylar was younger, as court documents reportedly reveal he was ordered to pay up when he fell behind on his monthly payments.

Despite a tumultuous childhood, it was previously reported that Bryan and his daughter became “extremely close” following the death of her mother in 2007, as Skylar was forced to relocate to LA to live with her father.