Sebastian <-> Ciel's father

Hahaha, I totally just noticed that until now xD
The resemblance is obvious, but like some people have already suggested, the resemblance might be due to Ciel's need to feel comfort in the demon, and thus Sebastian presented himself in that form. Or maybe Sebastian 'used' Ciel's father's body to move around on earth? Or perhaps it's just a bit of a bad joke from Sebastian?

I like Kuroshitsuji being yaoi like it is too, yet one cannot help but wonder...

I agree with Red Devil. Later in the manga, when we see Seb first becoming Ciel's butler from demon form, he does seem to be considering what would be best for Ciel.

I don't think they look the same at all really. >.>
I mean, there's plenty of episodes that actually include Ciel's father in them, and he looks a lot different.
Or at least, I think they look different.

I think that there is a chance that Sebastian at least has some connection to ciel's father, though maybe its just symbolism. The whole show has kind of an aura of mystery to it, so I can't say for sure if that is the only connection to be made.