Golden Bachelor winner Theresa Nist appeared to cast her divorce drama aside for a fun-filled day at the beach. The reality starlet was all smiles while splashing in the water as she enjoyed the sunny weather outside with a mystery man in New Jersey, RadarOnline.com has learned. Nist, 70, flaunted her fabulous figure while sporting a low-cut white swimsuit during her low-key outing. The former ABC contestant, who was one of the 22 ladies vying for the heart of Gerry Turner in season one of The Golden Bachelor, was seen embracing a silver-haired man clad in a white tank top and shades in photos…