heart sparkle
When something is so cute, adorable, lovely, etc. that it just makes you feel all wonderful inside.
"Oh man, the movie Wall-E is so cute! The way Wall-E loves EVE just makes my heart sparkle."
heart sparkle
a heart sparkle is like having a crush, but it’s not that far yet. when you’re starting to talk to someone and think you might like them, but don’t necessarily have a full-on crush it’s a heart sparkle.
He’s so cute, I have a heart sparkle for him.