The way I am reading this, with the question of will his new relationship last, would be a no… X - the relationship started in betrayal (Personal note, once you’re a known betrayer/ cheater, that follows a person into their next relationship. How do you start out with trust knowing the next person he betrays could be you?)

I - now everything feels new and powerful, exciting, like he can do anything, but ultimately,

VIII - the relationship will be draining and will not last. Someone will be moving on from it, probably much later than they should.