It all started with the web comic Go Get a Roomie actually. At some point a couple years ago I saw someone in the comments section for one of the pages mention Girl Friends so I decided to buy the first volume and give it a go. Then I proceeded to buy all of Morinaga's work that I could. Then I found Citrus and Kase-san and bought all of those. Then I found Lily Love and Pulse and fell in love with those and proceeded to buy the physical releases of them when I found out they existed. Then I started looking everwhere for more and at some point stumbled onto Dynasty. If I'm remembering correctly, I actually found Dynasty while looking for more of Takemiya Jin's work.
So yeah, Go Get a Roomie introduced me to Girl Friends, and Girl Friends basically made the whole "Yuri craze" click in my head. It's actually funny how long it took for that to happen. I loved Go Get a Roomie and Tamen de Gushi for years before getting sucked in to Yuri as a whole. Just for some reason the idea to look for more never really crossed my mind until I saw that recommendation for Girl Friends.