Harry Styles Trolls Ex Taylor Swift With Birthday Tweet

Harry Styles either threw a not so silent shot at ex Taylor Swift or waved the white flag by quoting one of her songs in a birthday tweet.

The 1D-er turned 22 Monday and posted the on-point lyrics to Taylor's "Red" album throwback "22."

Seems innocent enough until you factor in Harry getting chummy with Taylor's gal pal, Kendall Jenner.

We'll give him the pass ... chances are he was song material in the past.