I still feels that his love for him is for ryu.... am I wrong?

yepp , didnt he say he fell out of love already long ago. its just a shock to hear ur "first" love married that he felt.and its still his best friend.

But what about the blush when he thought that "switching to the younger" was true? If I know anything of plots, that was a heavy foreshadow that he already loved Takumi. That, and most yaoi ends pretty happily, with both seme and uke looking at each other with sparkles and all that. It's kind of expected that Usa-nii loves Takumi for Takumi.