still virgin but want tips for first time.

Well, it's your life to do whatever with, but for your sake, talk it over completely, get all worries/concerns out there. Condoms and birth control please. My bf and I have been going out for nearly 7 months and we haven't had sex (my GOD it has been hard).
For your gf's sake, use lube. It'll make everything easier, or so it seems. She actually shouldn't bleed-- nothing is being torn. The hymen, unless it is abnormal, will just move out of the way. And if it is abnormal, she would know b/c her vagina wouldn't have an actual hole. (The hymen would cover it instead of protect it).
Oh, and enjoy yourselves. Make it special. You'll remember it forever, promise. Don't have that memory in a bathroom sitting on a toilet.

Tips from experience. Make it special by making it complete.
1. Find a place where you don't worry about being interupted. Relieves tension.
2. Bring her a flower, one rose, or a small present....injects romance...women like it.
3. Start with kissing and gentle fondling of the private parts while dressed. She will probably be very sensitive to this but it will drive arrousal. You may have to keep this to a minimum for your sake when starting out or it may be all over before you get started,for you i mean. Don't let her play with you to much you play with her and think about a brick wall for awhile.
4. After you've had sex a few times you can extend #3 for her pleasure. But for now you better get undressed quickly, her in maybe just a bra and you just a T-shirt.
5. The Clit is the key to her orgasm and what really makes her feel good even if she doesn't have an orgasm. So, put some lube(vasoline is easy to buy and works great)on two fingers and start to slowly and gently rub around her clit. Ask her where it feels good. If you use two fingers one on each site is best. I would imagine this will drive her crazy the first time but don't hurry, let her enjoy it, the best is yet to come.
6. Talk to each other a little dirty at this point about what you are going to do or ask her if it feels good and tell her it will get better when you slide you cock into her pussy. Also, if you can suck on one of her nipples as this usually is a good stimulus too.
7. While you are rubbing the clit, with the lube, also slide your finger down and into her vagina a little and then draw it back up over her clit slowly. This should excite her more and you can tell if she's getting wet inside which makes your entry much easier for you and her.
8. Now tell her you are going to Fuck her with your cock, but you are going to take it easy. Put lube on your cock too.
9. Position - probably one of the easiest positions is with her on her back and knees raised. You slip you body, private part underneath her raised knees. she's on the right and you on the left. Put your right leg over her left leg and move up to her clit.
10. You can now hold your cock and rub it on her clit and then slide it down till you feel the opening of her pussy. Move your body towards it if you have to and away you go. This position affords you good penetration, put your left hand under her butt and you can raise her up if you want to. Her right knee will be above you and you will have like a sissor on her left leg.

This may be better for the next couple times and great Sex.

For a shortcut the first time, just kiss and hug, get your naked bodies together, work the clit and pussy with some lube till she feels wet, put some lube on your cock, and get it into her. If you pause or go slow it should last longer. Remember the Brick wall...so you don't come to fast.. and stop and pace yourself...she can and will go longer than you can so you want her to enjoy it too. If you cum to fast then go back to the lubed finger on her clit so she can have an orgasm too. That is what will make her want to do it again soon, don't forget her orgasm even if it's after you..stick it out for her and it will always pay off for both of you.

Good luck

No where in your discription did you mention CONDOMS!! Unless you want your penis to fall off or have a baby, which at 16 you could not afford or care for properly, wrap it before you tap it. Slip it on before you slip it in. Don't be a Dick cover your Richard! A condom will also make you last longer!!

Good luck and go slow- sex has adult consequences. So I suggest mutual masterbation- but don't cum on her or near her vulva- sperm can swim!!

I lost my virginity when I was 17, I'm a girl and it didn't hurt as much as I thought it would. There was no bleeding and literally, only pain for the first two minutes and the pain was very minimal. It only lasted about ten minutes, but that was enough for me. Since then, the sex between that same partner and I has been great. (We were both virgins) Just be sweet and nurture her, if she cries, let her cry! Hold her and kiss her sweetly, be there for her at all times and never, ever pressure her!
Good luck and use protection.