Both of you should sit together and have to do serious introspection of your relationship. Try to find out whether any one of you losing interest in relationship and if yes, then try to find out reasons behind it. You seem to be very eager in going further in to the relationship, but you need to check on her part. If both of you are equally eager, then this should have not happen (not at least in 10 months). Stop directing your frustration in physical way; it seems to be a merely mechanical act in your relationship.