Okay, let me clarify my point of view before this gets out of hand.
I guess a part of my interpretation comes from the times Petrie saves Ducky. He even solely took on The Original Sharptooth to try to save her. Sure, he nearly drowns in the process, but you have to admit that he was either very brave or very crazy to take on that thing, and if he's crazy, I'd say he's crazy in love.
Love is a powerful emotion, and one does tend to go to the greatest lengths to protect those they love. Why would he go to such obviously death-like lengths for a girl he hardly knew at the time? If that doesn't explain love, then what does it explain?
Not to mention that Ducky actually kisses Petrie just for getting food down. Why would she do that for a guy she hardly knew?
You can go against it all you like, but when it is obvious with the fact that they don't actually show such closeness with anyone else, it just really says a lot in the end.
I shall NEVER defy what I feel about these two, regardless of what anyone says.
Now, as for the last part, I guess I over-interpreted with what others have posted in certain areas of the forum. (Especially the Captions area. Should have known better.

) I apologize for that.
I guess what I see and what you see are two different things. Sorry for the mishap I have caused. -_-