so, what do you do when things are going well with your therapist, but you still feel empty when thinking about him/her?

i have a good relationship with my therapist of two years, but there is still something majorly missing for me as far as she goes. i don't know if it's because i still don't know too much about her, or if it's because i know i'm not really apart of her life, or what, but there's like this big lacking there. and it's not like she doesn't give me what i need - her time, her attention, her energy, her support, and even her love (she's expressed that she does love me). we hug on the regular now, so why do i feel so sad? i even have a voicemail from her from this morning, but even that isn't enough! i seem to want more more more. maybe this isn't about her, i don't know. just thought i'd throw a post out there, see if anyone had anything to say..