Instagram and Facebook?

[Kushcakes]

Why is Instagram messaging that "your Facebook friend joined" but I don't have a Facebook account
I continuously gets messages on my Instagram account letting me know that "my Facebook friend.... just joined" etc... but I don't even have a Facebook account. How is this happening? Did someone create a Facebook account with my email? Most of these "friends" seem to have something in common with me, not sure how the information is being routed to Facebook. Any clarification on this would be helpful.
Thanks.

[Rose]

May be you FB account earlier with the same id, else u must have bee synk your instagram and accepted that option , soo its showing automatically added your friends .