hi, i was at my boyfriend's house yesterday, and i gave him a lap dance. however, during this, his penis lightly touched my vagina. there was probably only penetration to the hair and 1 cm into the lips. does this count as losing my virginity?

Hi,
The most frequent definition of virginity is penetration of the penis into the vagina. The Merriam-Webster Medical Dictionary defines a virgin as one who has not had sexual intercourse and sexual intercourse as:
1 : heterosexual intercourse involving penetration of the vagina by the penis or coitus.
2 : intercourse involving genital contact between individuals other than penetration of the vagina by the penis.