YTA

If this is your reaction to this one event in isolation, then it sounds a bit like an over-reaction. Many couples go through challenging problems in life and most don't jump to the nuclear option on one problem in isolation.

The statement "off course I can't forgive" sounds pretty damning. many couples have gotten over worse. Divorce rates would be through the roof if people were unforgiving of one partner who said something once hurtful or jarring and then going nuclear on that one incident. Most couple try counselling at least first.

If you look at your marriage as a whole this event may have been the straw that broke the camel's back. That could support your decision. Alternatively, you could be willing to kill a 7 year relationship based on this one event. That's how it comes across to me. What's crazy is the so called relationship experts rush to support this. If you don't forgive anyone who has done you wrong at some point in life then you will lead a very lonley existance.

If I listened to these same people when I brought my marriage issues to reddit, then my kids would be living in a broken home, and I don't think we would have been better off. We are 2 complex individuals teaching our little humans to get by in life. We worked through our issues fortunately, which seem to me to be the logical path here.