I want ti do stuff with my Girlfriends?

Whenever i get a girlfriend and i want to do stuff like kiss and snog and stuff i never end up doing it coz the people in my year are to immature and will talk about it for ever but i ant to do stuff but i also cba to go out and about with my girlfriend only if people drag me up there coz where everyone does go out its about 20 minute ride what shall i do?