Yeah, I don't know... I think it says a lot for the Doctor's opinion of Jack that he trusts him with Alonso, whom he also cares about as a person. Even if in fanon you'd like to think that Alonso and Jack end up good platonic buddies fighting evil for a bit. :)

You've seen the classic macro for Jack meeting Eleven though, right?

http://community.livejournal.com/ihasatardis/1729979.html

LOL. :D