I must agree with nigelreid and Adnan, and taking the risk of some folks insult me again i'll say it anyway, why is it legal to marry a 12 y old girl but if you wanna kiss a single girl, well over 20 y old, you can't do it either in public either in private (you are not allowed to be at the same house as a single non family oposite sex member), i would understand forbiding Public Display of Affection if it would be allowed to go to an house and display affection in private.

It's what we call to be caught with or without dog

Only God Can Judge Me
الله فقط يمكنه محاكمتي

I am you and you are me, if you love i love, if you suffer i suffer
أنا أنت, و أنت أنا, إذا أحببت نفسك أحببت نفسي, إذا عانيتَ عانيتُ