It's really hard to pick one favorite couple... I have several that I like, including the ones that I ship!! (Sasunaru, Taibunny... anyway, a lot) The first couple that come to mind are Tatsumi Souichi and Morinaga Tetsuhiro, since I am completely crazy about this series, actually I just love Takanaga-sensei. So, of course, I love Koisuru Bokun too, and while I was writing 1001 reasons why they are my favorite couple, I realized that I was thinking in another couple. Yeah, although they are very special to me, my mind took me to another manga, "Haru wo Daiteita".
I recently reread Haru from the first chapter and I just fell in love again.
When I think of a perfect relationship, I always remember Katou and Iwaki, not that they have a perfect relationship, on the contrary, they have to deal with the various consequences of it, be with work or with their families.
Katou sometimes is a little rough, Iwaki takes it everything too seriously... If I force it a bit (or a lot -wtf- kkk) I can find some similarities between them and Tatsumi and Morinaga...(sweat)
Another thing I really like, is that neither Kato or Iwaki have the type girly uke. Yes, Iwaki is damn beautiful, but it is not feminine and is not always the uke, right? That's another thing I really like in this manga, there isn't THE uke and THE seme. They see the fact that be the uke, with means a man who open himself to another man, an extreme act of love and trust.
That's why I just couldn't think in another couple to be my favorite!