The Simpsons (1989)

S27E13 Love Is in the N2-O2-Ar-CO2-Ne-He-CH4

Professor Frink, feeling isolated, utilizes his scientific skills to transform himself into a more appealing man. However, when he becomes inundated with attention, he creates an algorithm designed to match the lonely singles of Springfield, discovering that his real passion lies in science. Meanwhile, Marge, Bart, and Lisa spend Valentine’s Day with Grampa, attempting to free the elderly residents from a drug-induced state that lets them experience their fondest memories once again.