I am with LH on this in terms of his last post. But if you're okay with the status quo and just being friends to see if anything happens, then more power to you.
What's got me curious is why she wants to be 'friends'? Is she lonely? Why break the silence after so long to just be 'friends'. It doesn't make sense to me.
I also feel like there was that time period when you wanted more to be friends with her. And my gut feeling was that you should've taken up the chance and risked rejection because you are good with your life and who you are and you could move on.
My personality is that I always like to err on the side of clarity. I am good with going on in limbo for a while, but what you've gone through would frustrate the hell out of me. I am also on the side of the street that sees no value in friendship with the ex. Good relationship and civility for co-parenting - yes. But I don't need her to play the role of a friend in my life. I can go make new friends.
I think your window of being more assertive has passed and your interest has also waned, so I'd just let it be and keep doing what you're doing and dating other women. The only way I'd reconsider in your situation is if she pursued me aggressively with intention.
