Sex Addiction. It's considered an actual problem, enough that there are sex addiction “clinics” and sex addiction treatments. I have an idea. How about we take responsibility for our actions and leave the word “addiction” to serious and real issues, like drug addiction.
Someone who wants a lot of sex is just that. Someone who wants a lot of sex. There's no physical problem that occurs if they don't have sex. There's no mental breakdown if they don't have sex. They just don't have it. They may feel sorry for themselves that they're not getting it, but it's not like their body is going to fall apart because they have to be celibate for a few hours.
But, in our society, which these days doesn't seem to want people to accept responsibility for their actions, has deemed that this is something we can't control either. We now have sex addicts.