The love theme is easily the least memorable part of the Amazing Spider-man score to me. Wait, does The Lizard even have a theme?
I actually liked the love theme. Its not as big and memorable as Horner's past romantic ideas, but I really liked how it plays out in the score.
And no, Lizard doesn't seem to have a significant theme (based on first listen), but we ought to be grateful that Horner didn't rip out the danger motif as his theme instead. dadada DAAA!