My APO big was my ex-boyfriend who I never want to see again.
One of my APO littles was a good friend before her initiation, but I haven't talked to her in a long while (she married an a-hole). My other APO little I haven't heard from since I graduated.
My ASA big works in the same building as I do. We're not close in the sense of talking every day - I think this is more our different personalities than anything else - but we do keep up to date on what's going on in each other's lives. My ASA little dropped off the face of the earth before we graduated, so my little little is basically my little. She's my best friend on the earth.