By Andrew Holleran Tom Brady and Gisele Bundchen live a pretty picture perfect marriage, but things aren’t always easy for the star quarterback and the supermodel. In fact, Brady, who’s coming back for yet another NFL season, admitted that playing well into his 40s has been an issue in his marriage. Unsurprisingly – and understandably – Gisele wants her husband to stay healthy and be around for a long time. “But that’s an issue, and it’s a very difficult issue to reconcile without just saying, ‘Hey, it’s time to retire.’ And I think there’s, you know, we’re coming to the end here too, so I don…