without looking at your description:

- fleeting

- can surprise you

- can hint at something deeper

- can be forms of release

- can cause your face to contort

- often hurt those closest to you the most

- both are often kept inside on a first date (though maybe they should be let out more, y'know?)

Actually mind blowing how good the comparison is :O. Reading yours now. Eewww warm lol. Solid!