ولا بأس بالقبلة للصائم للشيخ الكبير، فأما الشاب الشبق فلا، فإنه لا يؤمن أن تسبقه شهوته.
There is no harm in kissing for a fasting elderly man. However, as for a young man with strong desires, it is not allowed because it is not guaranteed that his desire will not overpower him.