Kevin Jonas admits in the summer issue of Social Life magazine, “In any relationship there are obstacles when balancing it out with a busy schedule.” Saturday night, Jonas ran into one of those obstacles: His wife Danielle fell ill, so he had to cancel his appearance at a party celebrating his Social Life cover. The St. Barts-themed party at East Hampton Studios went on without the couple, who will star in the upcoming E! reality show, “Married to Jonas.” The event benefitted VH1’s Save the Music charity.