Love is in the air for Jaxson Dart. The Giants quarterback showered girlfriend Marissa Ayers with affection Saturday to celebrate Valentine’s Day. Access the Giants like never before Get texts from Paul Schwartz with all the latest Giants news and insights, exclusive to Sports+ subscribers. tRY IT NOW Dart, 22, posted two pictures together with the model and influencer as the two were all smiles in what appeared to be an unidentified warm climate. “My Valentine,” Dart wrote with roses and heart