Met a friend, still obsessing over an ex-coworker. Crazy or just odd (who says "Well I've removed guilt from my personality" anyway?), but definitely not stalk-worthy or healthy material for him - she did laugh and say "Oh all guys tell me this" when he told her liked her. Sadly, nothing short of me finding him a woman will kick him off that, so no go there.
My proposed solution may be to remove her. But will have to keep thinking on this.