Trying To Remember a Gl Manga

Hey so, I read this one like a month or two ago, it had two main characters both work as designers I think at a company. One was more popular in high school (The main girl) but she feels less accomplished and like a failure, I think she's in her mid 20s now. The other girl is way more accomplished but looks up to and loves the main protagonist. They both like each other but the main girl is insanely just insecure and the other one reassures her.

There's also a scene when she is venting to the other girl about her inadequacies and they console and comfort each other.

I remember there's less than 10 chapters, they get together like sleep together within the first 4, one of the chapters the main girl sees a picture of her lover with another woman who turns out to be an ex girlfriend but currently a best friend of the love interest. Hopefully I'm making sense lol. One of the better ones I've read.