Looking for Manga

I'm looking for a specific yaoi manga. Basically it's about three friends who've known each other since they were kids. Let's call them A, B, and C. Well A and B are in love with each other but don't know it. One day B saw A and C out and it looked liked they kissed. So being a good friend he decided to support them. But the next time he went out with them he couldn't take it and started crying. This is when it gets fuzzy and I can't remember much except for the fact A started yelling at C that he made B cry. Idk I just really need to find this manga. Please help!