Well I've got a boy friend and I'm not sure how to act someone help me please he is really important to me he s so cute andf io kind of new to the rrelationship thing

Be yourself. That's the only way to act.

But I get so nervuos I can't even breathe and he notices and then I have absolutely no idea what to do have any ideas

Once you start knowing each other and spending more time together, the nervousness will go away. Just be yourself and stay calm. The fact that he is your boyfriend and has chosen you proves that he just likes you the way you are. So stay calm and be cool around him k.