Looking for a manga, can you help? *---*

Hey guys, there's this manga i remember reading a long time ago, but can't seem to find it now.. I was wondering if you could help me?!
It's a romance between two brothers. What I remember is that they haven't seen each other in a long time and can't really remeber what the other looked like, then the younger brother comes looking for his big brother and sucessfully finds him, but he doesnt tell him that they are brothers. They end up falling for each other, having sex and start a relationship.. everything(the younger brother still hasn't told him what they really are)! Than a friend of the big brother investigates this "younger boy" that his friend has been going out with and discovers that they are actually brothers and tells the big brother about it, who becomes angry the his younger brother allowed them to have that kind of relationship withou saying anything!

That's as far as I can remember, hope it's enough! Thank you, and sorry if I made any mistakes ٩(๑❛ᴗ❛๑)۶