Most Helpful Girl
Pretty plain n simple dude, she's telling you you ain't getting any! Just because you made her your girlfriend you still ain't getting any!
She felt she needed to tell you straight up so you didn't get the wrong idea and you don't have that expectation or pressure her because
You ain't getting any!0THIS IS NOT RELEVANT ANYMORE
Most Helpful Guy
Congrats on the first girlfriend.
Chances are that she's no stranger to guys wanting her sexually in spite of being a virgin. She's going to be more experienced in this respect of being pursued sexually than you, most likely, and might have some insecurities there.
Be grateful to have a girl next to you and try to learn how to communicate with her gently and affectionately and possibly even humorously (helps to diffuse awkwardness) instead of worrying about the meaning of everything she says and seeking others to decipher it.
And have fun. You're young. There's things to do together, experience together. If things get rough and you get into a conflict with her, no matter what, try to stay calm and patient.0THIS IS NOT RELEVANT ANYMORE