Im 16 years old and my boyfriend 19?

I date him is okay? I'm afraid something. He's under 18 and I don't want lost my vcard. If he wants to fuck me what I do?
I really love him and he really love me. But im scared.
I date him is okay or not?

Sorry English isn't my first language.
Updates
+1 y
Sorry he 19 years old
I failed that sorry not under 18 sorry
Im 16 years old and my boyfriend 19?
Post Opinion