Yes, our FOO issues do influence and shape who we are today. However, we can break those patterns. It isn't a life sentence, ya know.
I'm addicted to attention and affirmation.
In what ways are you addicted to attention and affirmation? What does that look like to you? Did you receive any of them from either one of your parents?
I get caught up in fantasies and most recently affairs.
If you don't mind, I'd like to help you by probing a bit here. What types of fantasties do you engage in? What form and shape do they take in your head? What do you get out of those fantasties?
I over value sex in relationships and under value integrity and commitment.
How and where did you learn those traits? This is a learned behavior.
When the M word (marriage) comes up, I literally panic.
Panic is an outward manifestation of one's internal fear(s).
What is it about "marriage" that strikes the fear in your heart and head?