Well bully for the gays going along with it! I must admit, I have never ever considered that they may be offended by what is normal behaviour. And do you know what, I don't think I will again either.
I don't think it is supposed to be a gay relationship - I got the impression it was supposed to be "mum", but used an NY deli chef to hammer home the product.
Get real, homosexuality has always been around, no-one can deny, but it is not natural when compared to the millions of hetero relationships, without whom none of us would be here.