Poor Shannon! The Real Housewives of Orange County star's estranged husband David Beador is still rubbing his rebound romance in her face — and even the couple's kids are upset, a source exclusively told Radar.<br /><br />On Shannon's first Valentine's Day without her husband of 17 years, David's much-younger girlfriend Lesley Cook, 34, took to Instagram to show off their steamy date.<br /><br />"Happy Valentine’s Day to the most kind, funny, motivated, loving man! The sky is more blue & my coffee tastes better with you in my life," she gushed in a caption for a photo of red balloons.<br /><br />moved on so quickly and publicly, the source claimed.<br /><br />Radar was the first to exclusively report that David, 53, began dating Lesley in December, only three months after Shannon, 53, announced their separation.<br /><br />infamously cheated on Shannon in 2015 with a family friend.<br /><br />The former couple will return to court to fight over spousal support on March 12. A mediation session to work out custody issues failed last month.<br /><br />Do you think that David Beador and Lesley Cook will last? Tell us your thoughts below.<br /><br />We pay for juicy info! Do you have a story for RadarOnline.com? Email us at tips@radaronline.com, or call us at 800-344-9598 any time, day or night.