I've heard conflicting stories.
Some says that late bloomers take longer to ejaculate the first time cause they are too used to their hands. Other say that you ejaculate almost instantly, no matter how early/late you are to lose your virginity.
Someone I talked to said that the girl he lost his virginity to never found out that he was a virgin.
And a man that goes down on a girl and knows where the clitoris is, might be better in bed than a man that slept with many but doesn't go down on them?