Yeah, there's a story about that.
So my husband and I met at college (high school) when we were 16, we got together when we were 18. Less than six months later I told the boy I was going to marry him someday. I am a dog person, loyalty is built into my nature. If, somehow, the fate of the free world depending me cheating on him, the free world can go to hell.
My characters don't cheat, and declare themselves early, because I find the concept of cheating on someone you love to be completely alien.
I'm a sad romantic bastard. Y'all can laugh now.