so0o i am a girl and i recently have been thinking about having anal sex

... the thing is, i have had it done before and it hurts, but this guy i am with now was touching my hole and using his finger and it felt amazing

... I was talking to a couple friends and one of my friends said her solution to the hurting situation is to use spit to lube it up. she has used lubrications and condoms, but she said it hurt w/ these techinques. ever since she has been lubing up with spit, it hasn't hurt her and she loves it... how true is this? if this is true, what makes spit so much different?