You have a right to have firm boundaries and communicate them clearly to your partner. Doing so will usually make a relationship and life together better, not worse because your partner will respect your honesty and strength. If her doing that will hurt you, I strongly recommend you communicate clearly and up front that you know she has those interests, but following up on them is a deal breaker for you, and you need her to be honest about that. You’re not even married yet, have the conversation now! It won’t be good for you or for her to be an angry shell of yourself like the dad in the article, making a sacrifice you never wanted to make.
I'm only mentioning this as a potential future divorce topic.
It's not up to debate whether or not I accept cheating because I've already set it as an immovable barrier multiple times: come into sexual contact with anybody else during the marriage and she's going to be thrown out of the window with all of her belongings.
But if she comes to me with honesty and hasn't done anything yet - why would I want to be on bad terms with her as she leaves? I can only be sad at her decision.
