I had a crush on the youth leader and he kissed my best friend and I on our foreheads when we were 14 and 15.
Did kissing on the forehead mean anything?
Yes that's how I got a crush on him.
You sound like he groomed you for something that will lead to more inappropriate things. It's wrong that he even kissed you because he is much older with more experience and you shouldn't have let him kiss you at all because it's inappropriate. It's not right and frowned upon by society.
I think it's a good experience for me but some would disagree.
I think you should tell him to not do the next time he tries. It's important to have boundaries and to let people who are older know that this is inappropriate.