A married man joins a highly rated personal gym to rebuild the muscular body of his youth and keep his wife interested. His one-on-one instructor is a cheerful, feminine man whose large cock slips from tight sportswear. The trainer presses close and gets the client fully hard, then takes a liking to his pumped shaft and rides it with his ass, milking out unfaithful cum. Hooked on mutual ejaculation he cannot experience with his wife, the man returns to the gym again and again for repeated anal creampies.