That's really something to find WW on a dating site. Did you find out how long time is she part of this site?
I was doing some digging in my H's OW and I found she is a dating site in France. I did not say anything to my H, maybe he knows about it. But it is interesting that she keeps the profile there, maybe laziness, who knows. She is a married woman, has a R with my H and has a profile on a dating site. Crazy ah!
Like Toots said, it's a bit early on your sitch. But again, you know about your WW a little more then we do.
I am happy you are trying some other things, other ways to keep your life interesting. Hope you are ready for whatever comes your way. If not, I guess you will find out.
Regarding your Dad... I would say, take under consideration that life was probably different for him. His values are not the same as yours. The world he did grow up was a different one then yours. His life was built on what was given to him by others and he became the man he is, and so he did with you.
Take what is best from whatever he says to you. Sometimes the ones that love us the most are also the ones that hurt us the most. In his way of caring for you, giving you advice of how not to feel like a failure as a father (like the way he may feel), he goes a little too far with his words.
Some man grow up to be tough, but then they lack to be sensitive. Maybe you can look at him and take what is best of all he is trying to say. Remember he is just a human being, not right, not wrong... just like you, saying his convictions from what life has been teaching him. Make it simple, then you won't get hurt.
Hope you have good luck with the dating adventure. It's nice to see that you know what you want from a new R, a new person. I have no clue of what I want.