Same Mother Different Father
Do children share the same mother but are they different from their stepbrothers? ۔
Half of your genetic material comes from your wife, the other half from your mother.
If he and your mother become your father and your brother or sister, you will become LL's brother.
If your mother fathers a child with another man, who is not yours, then the child has half of your genetic make-up because the mother is also your mother, but because of that, she and you Like no, she's half of you - sister!
It's as simple as half a cake.