Article continues below advertisementValerie Bertinelli is opening up about a long-held dating regret that still weighs on her heart.The One Day at a Time star took the opportunity to apologize on air to a man she stood up over 40 years ago. The confession came during a recent episode of The Drew Barrymore Show, where Bertinelli participated in a dating panel.Article continues below advertisementSource: @TheDrewBarrymoreShow/YouTubeValerie Bertinelli apologized for ghosting a date when she was 19.