Ata' bin Yasar (may Allah have mercy on him) said that Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) was asked about kissing a woman while fasting, and he permitted it for the old man and disliked it for the young man.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصيام / 8087