Fetching details from the dictionary...

to melt (and become soft or liquid)
to be enchanted (by); to be charmed; to be bewitched
チーズが熱で盪けて美味しそうだ。
The cheese melted from the heat and looks delicious.
彼女の屈託のない明るい笑顔を見て心が盪けた。
My heart melted at her smile.
チョコレートが口の中で盪けていく。
The chocolate melts in my mouth.