So I'm kind of an oldfag, I met a girl earlier this year when she was still a highschooler (she was and is 19 - I'm in my late 20s)
Honestly, I experienced teen love this way.
And I found it really annoying.
I know this won't really help on you but even if you couldn't experience teen love not to worry:
It's not like in a romcom anime, real life teen romance is full of drama and sometimes cheating.