Foreplay, no penetration yet could there be possiblities of

My partner and i love to foreplay. Mainly because im still a virgin. However, what im afraid of is getting pregnant by only foreplaying. I dont even know if this is possible without penetration. But usually he or i have our underpants off, never at the same time, its either one or the other. There's never been penetration involved. But im wondering if there could be any chances of getting pregnant if his penis happens to find its way out to touch my outer labia, rubbs againts it but doesnt cum or penetrate. Im asking because there could be chances of precum, but if he said he wasnt wet, then could there be any chances whatsoever??