You said you take creams for it on your knee's? Would it work for your private parts as well? If not, then your going to have to live with it. If you get a serious girlfriend along the line she's not going to care about the complexion of your dick, she'll love you for who you are, dw.
As for the girlfriend's, It's been a while since I've had one. I've never had even a semi-serious relationship (at least since primary school, but that doesn't count I was like 9). I got the hottest chick in school (no joke) once. She asked me out, and then literally 24 hours later (nearly exactly, it would of been minutes off) she dumped me. It took about half a year to get her as well. I was an awkward boyfriend for the day we went out. I just stood there next to her looking at my feet, and when she asked for a kiss before she left school I said no - That's how fridget (means sexually shy) I am, and why she probably dumped me.
I've never liked someone as much as I liked her, I still love her to this day, and it's been a year. She moved schools, and has just stopped talking to me. When I talk to her on Facebook she just answers with two word replies, and politely turns me down when I ask to meet up with her.
Maybe when I'm a big soccer star I could get her back!