For me personally, you're relationship with your ex is now over so i'd say you are free to do what you want if anything, the friend of your ex-wife would/should feel more of a moral obligation than you about the situation.
So even if your friend is “ok” with you dating her ex, you are likely going to see a lot less of your friend a buddy of mine recently mentioned that he might invite my ex to a party that we were going to and asked what i thought about that. I told her that i enjoyed that she loved me, and that one day i hoped to love her, but i just wasn’t sure, at that moment, if i was able to feel the same way about her, and i didn’t want to lie. Don't mess around with your friend's ex behind his back that's a shitty thing to do and they will almost always, inevitably, find out this is the only answer that's simple, says dr tibbals.
Sometimes it seems like the universe just likes to laugh at your life that's certainly the case when you find yourself attracted to your ex's friend. In many ways, dating the ex of a friend is a “damned if you do damned if you don’t” situation i know of many examples of people who have been in this exact situation the results have.
Making the decision to date your ex-wife is never an easy one once you've decided to take the plunge there are some basic rules you may want to consider there are issues you want to make sure are either taken care of or in the past then there is the entire dating scenario and the questions of how.
Don’t tell your friend that they aren’t allowed to date your ex telling your friend that they aren’t allowed to date your ex could hurt your friendship and your friend's feelings it also destroys the potential for your friend and ex to create a good relationship and find happiness. Your friend doesn’t have the right to be angry because you are dating her ex we don’t own the rights to our old lovers only if she was deceived or betrayed when they were dating should you. For instance, if your friend doesn't want to go to parties where her ex will be in attendance, don't pressure her but don't assume she doesn't want an invite if you haven't asked.