As if Prince William and Duchess Kate could even be any sweeter. Whether they’re celebrating Princess Charlotte’s birthday, or Kate’s rocking the cover of British Vogue, we love seeing what the royal couple is up to. Hot on the heels of their fifth wedding anniversary last month, one UK fan — photographer Paul Ratcliffe — sent a note to congratulate the couple on the milestone. Ratcliffe took to Twitter to share the return mail he received from the couple afterward, and it looks like a photo we’ve never seen of the couple before.

The back of the card read, “The Duke and Duchess of Cambridge were so touched that you took the trouble to write as you did on the occasion of their 5th Wedding Anniversary. It really was most thoughtful of you and Their Royal Highnesses send their warmest thanks and best wishes.”

Can you even? First of all, just knowing that they took the time to respond to the note is next level, but the fact that they sent a photo that we are pretty sure hasn’t been shared before is really something else. Kate looks gorgeous in her pale mint suit and, as always, Will is looking dapper.

Kindness, style and still sending out thank you notes? That’s some serious relationship goals right there.

What’s your favorite Will and Kate moment? Tell us @Britandco!

(Photo via Pool/Getty)