Tell your boyfriend that he is really great, but you're not ready to be tied down now. Kiss anyone you want.
I agree that she should talk to her boyfriend first, but I don't agree that she should go around kissing everyone just because she's young.
If she's been dating her boyfriend for 18 months than at one time she was serious about him. She should ask herself if her sudden interest in other guys is a result of her not really loving her current guy or if it's because she's afraid there's something better out there. If it's #1 then she should move on, but if it's #2, then she needs to realize that even though she's young, he could be "the one."
You can't go through life always looking or expecting something better to come along, because you may be missing out on what you already have. she's afraid
Missy--18 years old