i can't say i've ever really lost a love yet, though it's inevitably going to happen.
I don't think I'd choose to live with pain if i could help it. so i guess the answer is that i'd move on if that's actually possible, but it doesn't seem at all that that would necessarily be possible.
on the other hand, you did say memories, too...i'm not sure i'd want to erase the memories. or even ignore them. it's hard to tell.