i don't know what she wants, but if it was me and i was really committed to having something, i would end my current relationship and find a way to deal with it. not doing so would indicate that i was comfortable leaving things loose and expected reciprocal non-effort on your part. i would think as an aggressor and Ne polr she'd rather keep things simple (ie if she wanted you exclusively, she would find a way to have you exclusively) and you sitting there staring and waiting would complicate things and make you less interesting. i'm not LSI though.

regardless what she wants i think you're better off keeping things open for your own peace of mind before you really give your heart to somebody who isn't ready to care for it properly. if you hold out for her right now, then you're putting yourself in a high risk situation for a lot of pain. i think this is one of those "if its meant to be, it will be" things. its not like you have to date, especially if you think it would mean stringing other people along, but live your life and try your best not to get tunnel visioned.