That's a good question! You just do separate sex time from life time. Two people get completely enmeshed in physical lust with each other, then go right back to normal living together.

I don't see you having an addiction to sex (especially as you've never had sex!). You are having normal thoughts, imagining having sex with someone you are attracted to.

It's normal to think of someone's body physically and passionately. Remember, we are just animals.