Looking for some good lesbian young adult fiction. The relationship doesn't have to be the main story just looking for some representation. I would like suggestions to be relatively new, as in the last 3 to 4 years. If it's older than that I've probably read it. Thanks in advance.

try reading:
labyrinth lost
girl hearts girl
mermaids of eriana kwai
ex-wives of dracula

I like a lot of Siera Maley, (Dating Sarah Cooper, Taking flight... )
Just Juliet by Charlotte Reagan was very good.
South of Sunshine by Dana Elmendorf was decent as well...

Siera Maley's Colorblind is superb, as is Style by Chelsea M. Cameron, and Labyrinth Lost by Zoraida Córdova!

Emily O'Beirne has some good stuff I would also try The Space Between by Michelle L. Teichman.

I'd suggest Afterworlds by Scott Westerfeld. It's one of my all-time favorite YA books. It's sort of like two books in one. The main character is asexual but she's in a lesbian relationship. Really beautiful writing but it's not for everyone.

https://www.goodreads.com/book/show/18367581-afterworlds

How about:
Georgia Peaches and Other Forbidden Fruit
A Darkly Beating Heart
Our Own Private Universe