Uhh you are the one who is not getting it. Sex to us outside of marriage is sinful and it is said in the 10 comandments as well. The Bible says that we are not to have even a hint of sexual imorality, that comes down to many things. Even our thoughts, we dont want to temp that. So we fasted kissing to keep our relationships focus on God.
Through our fast, we have grown really strong together in eachother and in him. Would not have it any other way. Sex is a beautiful thing and we never said it was bad. It just is outside of marriage because that is the bonding of two to become one.