He could have told you before you exchanged rings but, why would he want you to know? If you were aware of his roster filled with exes, maybes, and potentials then you would have fled in the other direction.
No, he assured you that all of his exes were crazy and completely out of the picture. You believed him until...you had your first major disagreement. He changes the subject mid argument and starts to tell you how his other exes are way cooler than you are. You are stunned.
Where the hell had that statement come from?
You stand there with your mouth gaping open and a huge fissure in your heart.
Instead of apologizing or even going silent, he proceeds to tell you the whole reason why he proposed to you. Turns out it has nothing to do with wanting to share a life with you. His first choice would have required him to grow as a person...and that is something he has been actively avoiding for decades.
Tears are falling down your face but, this only seems to spur on his cruelty. He rambles on for a few minutes more and you think about how you have changed your name and moved mountains to be with him. Your thoughts briefly go to the one that got away from him. You envy and hate her at the same time. She is probably somewhere not being insulted on her honeymoon and thanking her lucky stars that she was able to get away from him.