Lack of "Love" in POTC
I think something that's interesting about these films is that dialogue is used for mainly expositional purpose or comic effect. Very seldom does dialogue carry the scene forward or reveal the inner workings of any character.
For example, the only time we hear anyone say anything about "love" is when Will tells Elizabeth he loves her at the end of 1.
Other than that, we are given to take the characters actions and assume their feelings from those.
Governor Swann clearly dotes upon his daughter, is fearful for her life, and goes to great lengths to make sure she is safe. That can be seen as love.
Gibbs convinces the crew of the Black Pearl to go back to Port Royal and get Captain Jack... even when they already had their ship and a code to follow. That can be described as love, in a friendship/devotion sense.
Elizabeth, though never saying she loves Will on screen, becomes his fiance and sails to Tortuga to find him. We interpret this as romantic love.
So my point is, I think the idea of there needing to be "concrete evidence" for characters loving each other is a bit out of context. That isnt the name of the game with these films. We must take their actions and interpret from there.
That being said, can we call what is between Elizabeth and Jack Love, or the beginning of Love?