hello young man,
Thanks for using healthcaremagic.
First of all please note that
masturbation is a natural process done by 90% males of the world in lifetime.
In your case your masturbation is the normal process to fulfill your sexual impulses.
Most of the young boys like you when feel and think about sex, they masturbate.
You mentioned that your friends have girlfriend and you do not have, that is the concern thing.
Understand masturbation's advantages:
1. One can enjoy orgasm without any discomfort
2. No chances of sexual transmitted disease infection.
3. You can do in your thought with someone you like without causing any
problem to that someone.So no issue occurs.
4. You get rid of your sexual impulse on time without suppressing it which can
cause problem later on if you suppress(like night fall)
Considering your age it is normal to have thoughts about girls and sex and you masturbate for that.
If you can control that thought by putting your attention more in study and other work ,as well make your self tired that you do not have mood and energy to masturbate , then you can stop masturbation.
So in my opinion continue masturbation to relieve your sex impulse until you find girlfriend.
Regards,
Dr.Chintan Solanki.