Really?
That would be a huge heresy.
Yup.
They are spiritual brothers, according to the LDS.
AND God had physical relations with Mary, and that’s where Jesus came from.
Yep. They try to explain it away by saying that they just mean that Jesus and Satan are brothers in the sense that God is the father of all spirits, but when you delve into it, you find they actually believe Jesus is merely the first among the created spirit beings, which is an even bigger heresy!