It is not clear that sexual addiction really exists.
Homosexuality is not considered an addiction, it is a sexual orientation only.
He used to.
No.
Here is a site with many different sexual addiction treatment centers. "http://www.treatment-centers.net/treatment-directory.html" There are plenty to choose from.
Process is sexual, over-eating and gambling Substance is drugs and alcohol
There are so many different types of sexual addiction. The best way to find out if it is a problem is to take the free Sexual Addiction Screening Test on www.sexhelp.com. That said, if sexual behavior is causing you problems, you can't stop the behavior even though you try, you're isolating and disconnecting from family and friends, have shame around your behavior, or perhaps a loved one has commented on your behavior, you may have a problem.
some say heroin. nicotine is REALLY powerfull
It would be logical to assume one of two things about your friend. They either have a very strong sexual attraction to you, or their hormones are causing them to have an insatiable sex drive. The possibility of sexual addiction is also relevant, however I'm assuming you're in the teens crowd (plus or minus a few years) and that really is too young of an age for a full fledged sex addiction.
He does sexual intercourse with her every day. Certainly!! Syzzurp addiction
Signs of a sexual addiction, particularly an addiction to porn vary. One sign of an addiction is when viewing porn becomes an ever more present preoccupation in your conscious thoughts; at work, at school, at play, even while interacting with others--other activities get in the way of what you really want to be doing. As a married adult when you begin to anxiously await your spouse leaving on an errand so you can view porn is another sign that an addiction is present or forming. Another indicator would be the risk factor; when you are willing to risk getting caught and the consequenses don't stop you-- ie. losing your job, or losing the respect and trust of your parents or spouse. Mr. M - My Internet Doorman
The BBC has a good website dedicated to sexual addiction. Please visit http://www.bbc.co.uk/health/emotional_health/addictions/sex_addiction.shtml to see more.