Finding an Old Manwha

I read this story years ago and have been wanting to reread it but cant find it! Its a story of this girl who's interested in BDSM but is scared how her boyfriend is going to react. Her friend thinks that telling him is going to make him leave. She has a closet with this stuff and both her and friend buy stuff together. They eventually try it out and he ends up liking it and they get slowly more into it. There's also a side couple who they are friends with but I dont remember much.