Making out in the car

Me and my boyfriend are only in highschool. And I'm scared to loose my virginity. But We were in the car yesterday and he started kissing me, but these kisses were waaaay better then ever. Then he started feeling my butt and my boobs and kissing me all over up under my shirt and I let him go lower and lower then I said stop. Am I wrong for making him stop? I was scared. Did I lead him on?