Does she prefer it to be shaved to get it out of the way, or does she prefer the look?..
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Because trimming with either scissors (be careful) or a electric trimmer (be extra careful) usually looks nice, keeps hair out of the way, and is appropriate by locker room standards...
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Relationships involve a lot of give and take when involving a person's personal preference. If she is hell bent on you being shaved, then I would find that a bit odd. I would advise you talk to her because relationships should not be decided on whether a person shaves or not, or a small trait such as that. Make sure she is just asking you to do it, rather then demanding it. If it is a demand, that should raise some red flags...
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Another alternative is to just shave and then when the guys laugh or retort, be ready with good come backs such as "Oh yeah Billy? I don't see you getting laid anytime this year!" Thus turning the attention away from you, and then with time the guys should get use to it...
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Good luck,..
-Matt..

I'm the yin to Carlos' yang .....
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Ask what she means by "shave" ... or better yet ... let her do it for you...Stand in the mirror, let her get on her knees before you ... ask her to take it slow ... that way you can determine how everything looks as she proceeds.....
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Even if by mistake she takes off a little more than the boys in the locker room are accustomed to ... tell them ... u're gf was got a little excited with the trimmer and she's still apologizing for it, morning, noon and night, wink wink ... they'll be so envious ... they'll forget why they were making fun of you ... and start wondering when exactly was the last time their gf ... venture down there...Angie..

I'm the yang to Angie's yin....
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I don't think she meant shave shave. If that's what she meant, I have to tell you that you are in for a world of discomfort when it starts to grow back. My suggestion is to trim it down to a few millimeters (electric clippers), it will look neat clean and dare I say more inviting. If she's wants it gone permanently, consider laser, painful at first but you'll never have to do it again once the treatments are done. ..
Painfully...
-Carlos..

Your teammates probably don't have sex with you as often as your girlfriend does...

Not to sound like a whore, but a lot of guys I've seen naked have shaved. It makes your Johnson look a lot bigger. Tell the guys on the team that. Or tell them that she shaved too, and so it just feels better when you're with your girlfriend. I had a boyfriend who insisted I shave (but he didn't want to shave himself) and it just was uncomfortable. I think it's best as a joint effort. Gotta warn you though, the friction as it grows back could be very uncomfortable when you're playing football...