The immaturity, partying, renouncing Christianity, etc. is mostly a new set of behaviors for my W that has risen to the surface following her affair. Her parents are very upset about the sitch and disapproving (obviously) of her actions to continue in this negative behavior, so I do I think part of her agenda is that she is rebelling against their wishes.
I don't think she necessarily sees me as a father figure, but I think she believes having me out of her life will reduce the guilt and shame she feels from continuing down this path, and will leave her free to pursue other men with fewer consequences. I have made it abundantly clear to her that I am not her plan B for when that blows up in her face, and I will have a signed S agreement protecting myself and our home to that effect within a couple weeks.
UpperCut Me: 28 W: 25 Married: 4 yrs Together: 7 yrs Dday: 9/14 (W ends affair & comes home) S: 12/14 (W restarted affair 1/15; moved near OM 2/15) No kids