One major instance of that happening between Naruto and Sakura happening already occured after the Chunin Exams, after Sakura finds out Naruto saved her from Gaara. Remember her special smile for him?The fact that Minato saved her and loved her I think doused her fiery temper, albeit a little bit.
For a troll comparison:
The fact that Naruto saved her and loved her I think doused her fiery temper, albeit a little bit.
Here's Sakura literally "dousing" her fiery temper after finding out that Naruto loves her:
Ooh and here's that smile again after he saves her in the Kage Summit arc. Notice how quickly she douses her Tsundere temper.
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Ooh and here's that smile again after he saves her in the Kage Summit arc. Notice how quickly she douses her Tsundere temper.

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