Eh, and I think Fai sucking Kuro's blood for the rest of his life might actually be more intimate than kissing. ^^; Or well, to vampires anyway it's like... um, nevermind. ^^;;;
Definitely more intimate than kissing. I mean, you don't have to show love through a kiss or confession. I mean, it's obvious Syaoran and Sakura love each other (Sakura
is beginning to fall in love with Syaoran again, I believe) yet this love is 'destined'. Okay, Sakura
was going to confess, but the point of fact is that they cared about each other and - as Syaoran proved - would go to great lengths to keep the other safe.
What Kurogane has done mirrors that. He
does care for Fai, as has been shown on occasion (you don't try so hard to remove someone's mask if you don't care about what you'll find underneath), and now he's tied his life to Fai's in order to save him. If anything, I think this is possibly
more intimate and determined than what Syaoran chose to do for Sakura. He chose to go and retrieve her feathers, no matter how hard it would be, in order to save her life.
Kurogane has bonded himself to Fai for all eternity to keep him safe. He's willing to give up his blood on a regular basis to keep Fai alive (and trust me, I've been anaemic before...I'm not saying that Kurogane will become anaemic, but it's a possibility...and anaemia is not fun. You're constantly tired, weak, everything is a effort, you're pale, sick...and although in some cases it's treatable and easy to get rid of, it's not fun. Sadly my anaemia is only held at bay XD Stupid Lupus...), and this means he'll have to keep Fai by his side until they naturally die or...whatever.
Basically, it's a far bigger and more intimate price than Syaoran paid. Showing someone you care by going to that length is more of a love confession to me than anything. It's a far more hard-hitting confession; you don't
have to confess to love in order to prove you love someone. The things you do, and the lengths you go to for them can often be enough...So in my mind; Kurogane
has confessed to Fai. Just not in the conventional 'I love you' speech.
...As for the kissing...well. We'll have to wait and see.
(...Was that on topic, or was I just spouting nonsense?)