Sir Rod Stewart, 81, and Penny Lancaster, 54, are one of the most enduring celebrity love stories spanning nearly three decades. The pair, who have a 26-year age gap, found love together in the late ’90s before tying the knot in 2007 and welcoming two sons together.  In June 2026, Rod and Penny will be celebrating their 19th wedding anniversary. So what’s the secret to their long-lasting romance? The singer once revealed there’s one strict rule they follow in their marriage that has changed their family dynamics with their sons.  “We don’t argue before we go to bed,” Rod said in a December 2025 interview with Woman & Home.  “And we do not argue when we’ve had a glass of wine,” he added. “If we do have arguments, it’s over real quick. And I try and teach my boys that real men can say sorry.” The couple share sons Alastair, 20, and Aiden, 14.  Penny also spoke to the publication about how she believes her openness, and how she has “encouraged Rod to do the …