What do you mean, there's a tan girl next to you? Every time you're around a guy she's next to you? Are you a conjoined twin? Can't both of you fit in the tanning booth?
Different guys are drawn to different skin tones. Some prefer tan girls, some prefer China-doll white. Pale skin is not universally repellent.
You are what you are. Embrace it. Or get thee to a tanning bed if it will make you feel better.
Thanks for the question.