ولا بأسَ بالقُبلةِ إذا أَمِنَ على نفسِه، ويُكرهُ إن لم يأمن.
Translation: There is no harm in kissing if he is confident of his self-control; it is disliked if he is not.
The expression “feels secure about himself” refers to confidence that the act will not lead to an outcome that invalidates the fast. Under that condition, Quduri does not object to the kiss itself.
If there is a real risk of losing control and falling into invalidating conduct, kissing is regarded as disliked. The legal distinction turns on risk and self-control, not the mere presence of affection.