I used to think Liam was attractive, but once I found out he was dumb enough to get engaged to Miley Cyrus, that was pretty much the ultimate turn-off for me. Now I couldn't be attracted to him if I tried. Plus, in interviews he kinda seems like a total douche. Not only is Chris more physically attractive, but he seems to be well-rounded and have a good head on his shoulders (which is dead sexy). And you're right, I don't have any clue who Luke is.
what a hot family!
Then Liam lost about a billion points with the engagement announcement. Not because of the action but because of WHO he proposed to.