oh my gosh, i don't even really know what to say. i can't imagine what you are feeling, but i can relate in a way-ish. i'm adopted (from birth) and when i found my biological family i was shocked to find out that not only do i have a full-blooded 13-month OLDER brother, but my biological parents are MARRIED.

now, this is in NO WAY a comparison to what you are going through, but i completely understand that feeling of having the rug pulled out from under your feet. we tend to really base our identities on our parents and where we come from. sometimes, we have to make out own identities.

PM me if you'd ever like to talk. i mean it, we are always here.