What i advise you dont solely depend the feelings. If you think you need that girl in your life, if you are sure that you want commited relationship with her, just be with her and attach more even if your feelings fade. Cause after 5/6 month of dating The feelings fade most of the time, and cause first months are just honeymoon phases. So, if you want her just keep going, do what makes both of you attach more Feelings are unstable just you may feel the same, dont trust your feelings that much