Hollywood sweethearts Jennifer Lopez and Ben Affleck’s marriage is under strain and the rekindled power couple are “headed for a divorce,” according to a sensational report. The pair were last seen together seven weeks ago while grabbing a bite to eat in New York City, fueling rumors that a split announcement could be around the corner, RadarOnline.com has learned. Affleck was, however, photographed Thursday morning leaving the Brentwood neighborhood of Los Angeles, where he resides with Lopez. J Lo stepped out solo again on Wednesday as she arrived at a dance studio in Los Angeles accompanied…