try to check if she has no one in the present. if there is, pushing your luck makes love (as a feeling) weird.
just a caveat, there is also a chance that she's not gonna take you anymore, even if she's not in a relationship now. it did happen to me. someone wanted me back at a time when i was recovering from a bad break up with another guy...di ko na mahanap yung someone e...even if i told myself to have his company just a buffer zone while i was still mending my life...di na talaga...hanggang ngayon, given that i am single and he is still lurking...wala na ako ma feel e.
or
maybe because i am now considering somebody else...