Every person has their preference, and that just could be his own trademark of kissing. I used to kiss a girl that would do that---rub her nose with mine and I asked her what it meant, and she said she liked doing it. Maybe like my preference to kiss a girl's neck after I kiss them. Means nothing, just that I like them....
French kisses are always more than friendly. I have female friends that would be cool with me kissing them on the cheek or maybe if it was New Year's Eve or something, a quick peck on the lips. They would not, on any occasion, let me stick my tongue in their mouth.
I think it means that he likes you and it is not out of just a physical satisfaction. If he is being gentle like that then that means that he cares about you.
It could mean he likes you as a little more then again he could just be a sweet guy to hook up with this is a tough one I have been fooled before to think to much of these little actions just let things play out if he pursues you obviously you will know but do not get your expectations up to high.