A singer who "didn't like being alone" apparently has left behind three "widows," who are embroiled in a fight over his estate. The singer, doo-wop rocker Frankie Lymon, hit the big time in 1956. The song--"Why Do Fools Fall in Love?" Now, three women are claiming they each had been wed to--and never divorced from--the singer, who died 18 years ago at age 26 of a heroin overdose. "It now appears that (Lymon) may have practiced what he composed, since there is a dispute between three individuals as to who is his widow," said Judge Marie Lambert, who is presiding over the case in Surrogate Court in Manhattan. "It's a circus," said Melvyn Altman, a lawyer for one of the "widows," Elizabeth Waters Lymon of Philadelphia. "Frankie didn't tell anyone. I guess he didn't like being alone." Also involved in the fight are Emira Eagle Lymon, a schoolteacher in Augusta, Ga., and Zola Mae Taylor of Los Angeles, the female singer in the group the Platters. The battle started in 1984, when Emira Lymon sued the late singer's record company in federal court in Manhattan over the royalties from "Why Do Fools Fall in Love?" She claimed Morris Levy and his firms, Roulette Records and Big Seven Music, owed her $500,000. However, the other two "widows," Elizabeth Lymon and Taylor, both have signed agreements with Big Seven for that company to continue as publisher of the song.