Well I stayed with my girlfriend for 4 days last week and we never had sex and stayed sexually pure. The way I define sex does not encompass physical affection such as holding hands, hugging, kissing, and cuddling on the coach. Some hardcore Fundamentalist will add their traditions and experiences to the word of God and call it a sin to be alone with a woman/man, and to kiss and hug. But this is tradition and not Bible! Some got a bit overly paranoid and told me it was dangerous to stay with someone I have never met, and dangerous to stay in the same house with this woman for fear of having sex. Well all critics proved to be wrong as I expected. There is not a monster behind every corner, and not a black widow spider under every rock. Some have gotten bitten and eaten alive, and the stories are all over the television. But… they do not represent the majority, just a minority that is highly advertised and marketed. So you see I do not consider it a sin to temporarily stay with someone of the opposite sex, nor do I consider it a sin to live/rent a room from someone of the opposite sex if there is no attraction. However if there is a relationship then it would be a sin as the Bible is quite clear on marriage and the bed being undefiled.