Singer and actress Mandy Moore is hitting back at Wilmer Valderrama's claims of how Moore lost her virginity to him. He's a big liar!

The cocky "That 70 Show" actor appeared on the sexist Howard Stern radio show awhile back, and talked in detail about his sex life.

Valderrama boasted about all his lovers: Lindsay Lohan, Ashlee Simpson, Jennifer Love Hewitt and how Mandy lost her virginity to him.

Moore was mortified that Valderrama would claim such lies! She once liked him but after this, no more!
Source: Hollywood