Maybe it hurts because she's over sensetive. Dont start ouf focusing on her clit because it can be very painful and uncomfortable for women.

Have you tried giving her genetal massages? Be sure to use lots of lube.

this might help:
http://www.sexinfo101.com/pw_vaginalmassage.shtml

why not try using fingers aswell or before. on her clit

> if my tongue goes over like a cm deep it hurts her really bad, no matter how gentle im being.

Are you referring to inserting your tongue into the vagina? If so, then you are probably encountering the hymen, in which case inserting your finger would have the same effect.**

> i cant satisfy her and gives up after 10 mins of me doing it . please can anyone help me, i want her to feel like she makes me feel!

First of all the two of you must understand that we do not give orgasms away to someone. Each of us is responsible for our own. All any of us can hope for is to help or assist our partner to have one. For your girlfriend to have an orgasm, she must have first made the transistion from being a pre-orgasmic female to an orgasmic being. This is accomplished by learning to masturbate and then being able to do so regularly and consistently. A small percentage of women cannot achieve orgasms for whatever reasons, however, if your girlfriend can, then she must show you the technique she uses and then equally important provide feedback on how she is responding to your caresses. While this is primarily true for fingering the clitoris and surrounding pieces-parts, it also holds true for oral stimulation.

Making love is not what we do to each other; rather, what we do with and for each other and as such the process becomes teamwork. Both of you have an equal responsibility in the process for helping each other achive an orgasm.

If your girlfriend can masturbate successfully, then invite her to guide your hand several times until you learn to mimic her method of motions, rhythms, and pressures that are unique and specific to her. The same goes for oral, she needs to provide feedback on how she is responding to your touches and for what she may need--now, so that you can make tiny course corrections if necessary or to just keep on doing what you are doing.

The clitoris can become extremely sensitive to touch before an orgasm. If she indicates that touching it is too painful, then switch tactics and stimulate it indirectly. You can caress the immediate areas ajecent to it, fold the lips over it and massage it through them, stroke the shaft. These work for your fingers, lips, and tongue.

** If it is true that you are attempting to place your tongue inside the vagina when she says it is painful, then confine your tongue to the outside surrounding area of the entrance and just inside--and not as deep. The reason for this is because the vaginal opening is richly endowed with sensitive nerve endings; not so the vagina itself. So going inside is not as useful at this point as in concentrating your attention to the opening itself.

> she always gets fed up that i cant satisfy her and gives up after 10 mins of me doing it .

What are you doing to try and satisfy her? I've given you two approaches so let me know if I am answering your questions, or if I missed the mark.