you are over thinking it all aurora
you have probably thought he was behaving coldly towards you because you were making him late, and he was probably thinking you were feeling nervous about the evening, hence the quiet trip
whereas as women we would say how lovely someone looked when all done up, men are more laid back with their wording, so maybe it was his way of giving approval
wrt feeling a bit left out, i would imagine that it didnt even occur to him, and he assumed you would just slot right in and just get on with it
dont take it to heart, and maybe (dont stone me) he could have a small point about you might be looking for things to push him away because you are nervous at how well it has been going?
its not uncommon to behave like that if i am right, so chin up woman! 
elasta, sorry to hear about your mum, i dont say much about your situation but i do feel for you having been through it myself
you did absolutely the right thing by cancelling, and if he doesnt genuinely understand and hold that against you, then he can go sit with the other nobbers, quite frankly