I only feel horny for about an hour a day. also i masturbate around 3 times a week. is this normal? when with a girl, i'm horny.

Normal sex drive: Most adolescent males (and many females too) would agree. But you may know that you don't feel comfortable about it. If hearing it's normal help - good. If you still feel unsure - consider a counseling session w/ someone you'd trust. Sex is one of the hard to adjust to parts of growing up. We act like it's all fun, but it's usually a bit strange too. It's a normal phase adjustment.

All normal: Yes: your male hormone, testosterone is secreted directly from the testicle into your bloodstream and causes sexual sensations, feelings desires and fantasies. Relax and enjoy your sexuality: welcome to young adolescence-use lubricant, or your own sexual secretions to prevent another thrombosed penis vein...relax and enjoy the fact that you are on the threshold of manhood.