If Liv ends up pregnant with Fitz's child as a result of Closet-Gate, what do te think will happen between them?

well, she didn't so problem solved :)
now we have to worry about the scandal

I believe that Fitz would welcome the baby and Amore it with all of his cuore no matter the relationship is between him and Liv. He's always told her that he wanted to marry her and have children with her. He'd adore that baby.