Last week, Jessica Simpson married Eric Johnson in a Fourth of July ceremony attended by Jess and Eric's closest family and friends.
Naturally, Jessica's father and former manager was on hand, and according to some reports he brought his much younger boyfriend, Jonathan Keith.
Sources say 55-year-old Joe's decision to bring 21-year-old Jonathan as his guest created major controversy at the reception, which isn't surprising.
"Jess' mom was hurt," one insider tells In Touch.
Joe and Tina Simpson divorced in 2012 after three decades together amidst rumors that he had been cheating on her with a number of much younger men.
Joe repeatedly denied that he's gay in the wake of his separation, but rumors of Simpson dating Jonathan Keith began to surface just months after he split from Tina.
Joe has claimed that Keith is simply a young model that he's mentoring ... and apparently bringing to important family functions.
Sources say Jessica, who turns 34 today, fully approves of her father's new relationship and simply "wants him to be happy."
"It would have been easy for her to not invite her dad plus one to the wedding, but she wanted Joe to bring his special pal."
Both Keith and Simpson have yet to confirm that they are in a romantic relationship, but all signs point to that being the case.