I need help finding an ecchi manga I started a while back.

Hey everyone, a while back I read this ecchi manga that I liked quite a bit, but for the life of me I cannot remember what it’s called. The main character is dating this extremely curvy black haired girl with glasses, and I think they may be in a club or the student council? The other girls in the club get into a lot of perverted situations with the guy, but he is still loyal to his girlfriend. I remember one of the other girls was a tanned tomboy, I think? I mostly just remember the super curvy dark haired girlfriend with glasses. If anyone has any ideas, please help me out 🙏🏾!