Kissing can be a lot of fun. Don't think that just because you kiss a guy you have to do anything more.

On the other hand, once you're kissing passionatley, you might both feel like going further. The best way I know to avoid that is to kiss him in a semi-public place. If you kiss him in a movie theater or on your front porch, you know it's not going to lead to sex right there!

On the other hand, if you're sitting on your bed when your parents aren't home, there's not really anything to stop you, so it's something you might want to avoid.

I'm not trying to tell you how to run your life, just telling you what's worked for me.