In another world, where they weren't mortal enemies and they didn't have all that history, then Connor may have well been charmed by them. But they have too much history at this point for Connor to ever feel love for them. Respect, yes, but it's too late for any inkling of love on his part.

Charles feels a bit differently because Connor hasn't really been on his radar until recently. Charles has been on Connor's mind since he was 5, but Charles didn't really think him significant until shortly before the prison.

:D