i couldn't comment on what my first time was like... i was unconscious and raped... however, from what i can guage, most people feel a little let down the first time... there's generally no burst of orgasmic ecstasy, but don't be disappointed! what degree of vaginal penetration you've experienced prior to having sex (i.e. tampons, dildo... even having had a pelvic exam, etc etc) will have a great deal to do with how quickly you acclimate to being intimate with a man... trust me! it gets better... eventually, the natural lubrication, the comfort, the ease and the want to do it again and again will come... just give yourself time. i would encourage you to, if you are not using birth control, at least use condoms with nonoxynol-9 (spermicide) or even a combination of both... you are 15 and do not need the burden of an unexpected child or disease... good luck & let us know how it turns out for you!