637 (Always And Forever)

Number 637: numeric code used in text messaging to represent the phrase "Always and Forever". It is a reference to the number of letters in each word: "Always" (6), "and" (3), "Forever" (7). 637 is often used between romantic partners.

Or where ballet dancer Heart and art student Liming fall in love with each other through music and paint.

crossposted on ao3
WARNINGS: deaf character, just fluff tbh ^^