hell man, i gotta give it up to ya... i got laid out of desperation, i was tired of being a virgin... glad i did it... would of been cooler if i had more/real/strong feelings for the girl...
(REAL GUY ADVICE) (ladies i'm sorry)
if you care about the girl, tell her before hand... be honest, it has just never happened, no one special, blah blah blah...
if you don't really care all that much about her, and yall are both just in it for the moment... i wouldn't matter at all if you told her, but it would help explain your akwardness. (i would just say i'm drunk, lol jk)

a little heavy petting and sensitive aggression is what get's me laid 75% of the time... as a rule of thumb, if she smokes (anything) she is statistically twice more likely to bed down... and if you can put your hand on her inner thigh, without any tension, you are in.... being really stoned can actually hurt the sexual experience, and for most women, decreases the sex drive. Alot of women also drink to loosen up a little bit... which was a huge turn off when i was younger... but it is just that way with alot of women. they aren't nessecarily skanks, (most likely tho) and it doesn't mean you are taking advantage.

most people like someone around their level of sexual experience, but it depends on the personality. but dude... don't feel like you have to tell someone about your past... that can be such a huge turnoff

just take it at your pace, and be comfortable... but you are gonna have to take some risks and be aggressive... go ahead and eat some pussy, work up on some skills, get a trick or two... be kinky man, try shit... YOU NEVER KNOW

and there is never better sex than that with someone you love, and deeply care for.... and her sister lol