Relationships?

can you help me.
I have been with my girlfriend for 5 years. I recently went out with my friends for a leaving party. I ended up kissing a girl in a club. i regretted it straight away but stupidly gave the girl my telephone number. the girl phoned my phone and my girlfriend answered. the girl told her everything. my girlfriend has now told me to forget it. im gutted and want her back i realise how much of a t i t i have been, i just want her back. im 23yrs of age and have never felt anything like this hurt im feeling now. what can i do

If you think she is worth fighting for then that it what you should do otherwise you will always regret it.
However I would guess that you will have quite a task on your hands but if she thinks as much of the relationship as you do then you have a glimmer of hope.
Just think how she must feel though you have betrayed her trust and that is what you will have to try and build up again. That won't be a 5 minute job and you will have to accept that the trust issue could be thrown back at you in the future if you do get back together.
You have to be patient, acknowledge how stupid you have been, be as humble as you can, try and treat her better than ever before. You have to make her realise why you made the mistake, why you think it was a mistake and what she means to you. What assurances are you going to give that this will not happen again, how can you get her to start to build up her trust again.
You have got to try and she has to make the decision, whatever you do, do not get mad with her or get drawn into an argument. She is the one in pain and will lash out to protect herself, recognise that and work with it.

move on

Have a talk with your girlfriend, try and sort it out, tell her just how bad you feel about it, and also make sure you never have anything more to do with that other girl. Tell your girlfriend it's a lesson you've learned. If that fails, well, all you can do is move on, some day you'll find someone else and you'll think twice before you mess it up next time.

Your girlfriend is very hurt. I don't know how much she loves you - of course, that is what the crux of the matter is. Does she think your relationship is worth putting up a bit of cheating for?
I'd give her some time to think about it and then ask for a meeting, as such. Talk it through.
It's time you did some listening. I don't know if she will take you back, but you've got some serious grovelling to do.

move on