User blog comment:Jopjopjop/Volume 19 Spoilers/@comment-104.7.80.176-20150603035954/@comment-98.227.238.52-20150603193304

If she was trying to get Ise and Asia together than I'm sure it would have happened in time. If it wasn't for the whole Fallen Angel incident. And Rias wouldn't even help him save her at first. Asia wasn't even on anyone's side anymore. So the whole thing about them being on two completely opposite sides of existence wasn't much of a problem anymore. And Ise watched Asia die right in front of him. I'm sure that was the first time he saw somebody die.

Don't forget Ise wasn't even involved in the supernatural world until just recently. He just lived a normal life with a normal family and friends. (Uhh... that is if you can really call his friends normal)

Asia was raised by the church and was aware of the supernatural side of it from a young age. Not mention her healing powers.