Story where Draco/Hermione are sleeping together but refuse to admit feelings. Blaise helps them with a 3some

Looking for a fic where Draco and Hermione are sleeping together (I think in the room of requirement) and Draco is refusing to admit that he likes Hermione and she’s kind of in denial herself. She doesn’t want to mess up the no strings attached thing they have going and scare him away.

There’s one scene where Blaise suggests a 3some and Hermione agrees because she thinks it’s what Draco wants. As they are about to have it, Draco is shitting crying throwing up and rips him off her. Blaise was like “I can’t believe you were about to let me sleep with her” and was only trying to make Draco realize his feelings

Any idea??