Ah, I was right. Takuya isnt into Yuka, but it is kind of flattering to have a pretty lady supposedly liking you, so I believe anyone can relate to the feeling.
Right now, I strongly believe he will just be surprised when he finds the truth. Who knows, from what I can see, he would be happy. He is a decent person who wants his mother to be happy and to find love again, something a lot of others in his position wouldnt want to do at all.
Also, I loved that Yuka was genuinely worried about his well being, so its not like she only talks to him to get to his mom. I think they will keep developing their friendship, and when the time comes, Takuya will be able to relax since he will know that Yuka truly care about them, and would make a good new member for their family.
Now... Mihoto is a little clumsy, but maybe she also got distracted by the whole unconcious confession? I hope she did. ^_^
And... I sort of ship Tomoko(Yuka's friend) and Takuya, they would fit, although she might not be tomboy enough. Hm... Do I predict the apparition of a new character fitting this? Well, it would be nice if it did!