Friends. You do not share a common ancestor. You are not related to your step dad, and you are not related to your brother-in-law.
2nd cousin
not really
Your dad's brother is your uncle. If your uncle married your friend's aunt, that does not make you and your friend any more related than you were before. However, your uncle's child is your first cousin, and also your friend's first cousin.
your cousin.
A cousin.
He would be your second cousin.
Second couins
Maybe. O.O
niece in-law
yes, you can. If your dad and your cousins mom are brother and sister then you can date your cousins cousin on your cousins dads side.
Not sure but my dads best friend from highschool is cousins with Ted. My father and Ted's cousin Bob actually used to hang out with him as a kid. I personally have met him at said cousin's mother's funeral. Comes strapped as all hell.
it's like your 3rd cousin