Hi Sam,
We've known each other for *checks notes* 8 years now which is wild.
A lot has changed in 4 years of undergrad but you're still the same caring, throughtful, slightly quirky, person I've always known and loved. Just now you're a chemist and I couldn't be happier for you.
I'm so lucky, grateful, and every other possible adjective that you're in my life.
I can't wait to come to your Brown graduation. So much will have changed by then.
Happy Birthday Sam.
Alex