I agree with KC43 and Dagferi. Get yourself sorted out first.
How can I divorce someone who's always been there for me for someone who isn't there with an uncertain promise?
Could stop linking those two. Treat each section separately.
You could divorce someone because you longer want to be his wife. And yes. Divorce is final.... It means the end of the marital union. You could still be willing to be friends and still hang out with him post divorce or doing the coparenting you need to be doing. But could STOP being in a marriage you do not want. To free both you and him from the marital bond.
How can you long for someone who is an uncertain promise?
You are already doing that. Nothing new.
Neither are you doing anything to make it more certain.
You are willing to date him at this time, like this. Separated but not divorced.
He is not willing to date you at this time like this. Because your marriage situation is not resolved. It is messy and you keep on pestering him while he is torn rather than attending to your business to become less messy to date. He does not want to cut you out ugly, but you won't leave him be either.
You told him if he returned the feelings you would move forward with the divorce. Maybe he does not want you to get a divorce FOR him. Get one if you need to for YOU but don't bring him into it. Respect his limit and do not talk to him until your marriage situation is resolved one way or another. Your husband does not want to polyship so definite resolution sounds like divorce to me.
So yes. If you do not want to be married, divorce the husband. Finish up with the old before trying to start something new with the love of your life soul mate BF. Will it work out? Who knows. But that comes AFTER you finish with the husband. You already found out it does not work concurrently.
And if the BF does not see himself dating you til two or three years into future, yes. It could mean you get a divorce to wrap up the old. Then you could choose to be on your own two or three years. Maybe dating others in the meanwhile, maybe not. Get stable again and not so wobbly wonky.
That is the price of admission at this time if you want another shot at relationship with the BF.
You could not get involved in the fundraiser just to be in his orbit. Instead tend to your business and wrap up what needs doing so you can be free to date him with no strings attached. Ask him out THEN.
Otherwise it could come off like you are a person who wants to use him as exit strategy from the husband or use the husband as the back up plan somehow... Or like you want the bf to tell you what to do. Neither is especially attractive to me. Maybe not to the bf either.
Are you able to see how it could seem that way?
I am sorry you continue to struggle with all this. But I encourage you to sort things out and stabilize first. Get rid of things you do not want. Like the marriage. Then go after things you do want. Like relationship with bf. In that order with healthy spaces in between.
Galagirl