Dr. Billy Ingram/WireImage
Update: A source confirms to PEOPLE the couple have named their new son Rocco.
The singer’s best friend CaCee Cobb, 35, welcomed her first child — a son — with husband, actor Donald Faison on Thursday, Aug. 15, he announced Friday on Twitter.
“Yesterday @caceecobb and I welcomed the most amazing little boy into our lives! Oh Happy Day!!” Faison Tweeted.
While sharing his Tweet, the new mom added, “The happiest day of my life.”
Faison, 39, is also dad to Kobe, 11, Dade and Kaya, 13, and Sean, 16, from previous relationships.
“Imagine if you and your best friend were pregnant at the same time – CaCee’s loving it,” Faison told PEOPLE. “They hang out all the time anyway, but now they hang out and talk baby stuff, look at baby stuff online, and go shopping for baby stuff together.”
And when she and Simpson weren’t soaking up girl time, Cobb kept busy bossing around Faison — who accepted his new role. “[I tell him], ‘I need you to move this, I need you to move that. Pick up this. Help me with this,’ ” Cobb told PEOPLE in May.
Added Faison, “My character at work is a ladies’ man. When I go home, I’m a b—-. I’m her b—-.”
– Anya Leon