More than five years after her divorce from Jesse James, Sandra Bullock is "the happiest she has ever been" with her new boyfriend, Bryan Randall!

According to a new report, the 51-year-old actress' new beau is now living with Sandra and her two children, son Louis, 6, and daughter Laila, 3, and has been immensely helpful with raising the little ones.

"Bryan has officially moved in with Sandra. He still has his home as well, but lives with Sandra full time. They have been spending most of their time together," a source told E! News.

sandra bullock and bryan randall

Sandra and Bryan in October 2015.

"Bryan treats Sandra's children like his own. He really is a great farther figure," the insider added. "Sandra is the happiest she has ever been."

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Sandra and Bryan, 49 — who is dad to an older daughter, Skylar, from a previous relationship — began dating in August 2015. The Gravity star was hitched to Jesse, 46, from 2005 until 2010 and adopted Louis and Laila as a single mom in April 2010 and December 2015, respectively.