The ow is a predator! All is not what it seems. She will chew your XP up and spit him out. If he lets her get a hold of his financial dealings it's all over for him. JMO, but I think your X is just a mark for her. Wouldn't surprise me that she has a partner that is in cahoots with her. (No, I haven't been watching too many movies. LOL)
There are many red flags in this whole sitch with her and him.
MLCer's are famous for being confused and making very poor decisions. Their minds are so fogged up they literally can't think straight. Your XP is ripe for being played like a fiddle.
Please protect yourself A, by doing what your XP suggested and putting the money he gave you somewhere safe.
Get yourself detached from this because I believe there will be more drama to come. Don't put yourself in the position where you have to deal with this kind of thing again.
Your XP is definitely going to find out the grass in not greener.
I also do not believe his feelings for you are gone, they're buried for the time being. This is not said to give you false hope. So many things in this whole scenario do not add up.
Keep taking care of yourself A. You're going to come through this like many of the LBs do, in a much better place than your XP will.
