Ohhh K, this reminds me of a girl I know who loves her brother oh-so-much. And he loves her oh-so-much, as well. This brother and sister are waaaay close, obviously, however the two do not look enough alike to resemble siblings.
Thus resulting in them being mistaken for a couple ALL THE TIME.

It makes me want to vomit.

Love your siblings, but please do not loooove your siblings.