1. vuoi essere la miA ragazza ? 2. cosa ne diresti di metterci insieme ? 3. I just express my feeling and intentions, a yes or no answer would eventually come; silence is usually 'NO', but not only words is the answer's language. (2) is another way of saying a similar meaning, but leaves out 'possession' from the sentence (mio,mia). Actually I would say (2) is preferable, like thousands or other forms only limited by human imagination and by time at our disposal. Don't count on my knowledge, please leave this open for a while! === about answers: a) If the answer follows good syntax rules, that would be a more or less polite NO b) the answer that does not wait to follow your syntax, but pours directly from (more or less) deep feelings is one of the magnificent paintings on this madly rotating piece of stone, each being a unique piece and greatly appreciated gift. Annotation: all of the above might be good, unless told to my girlfriend: stai lontano da lei!

In Italy we use to say something like: "Ti vuoi mettere con me?", but if you want the literal translation of your sentence it is: "Vuoi essere la mia ragazza?". The answer is yes or not (si o no) but, to be honest with you, we don't use this sentence and the answer) so often...