thrill/fade?

English Teacher
Hello.
I'm trying to express the idea that the quality of being exciting and new in a marriage would go away after a while. Does this work?
She was thinking that if she marries him, after a while, the novelty of their marriage would pall and they would grow distant.
What other words can I use instead of "novelty" and "pall"?
Is there a better way to express the idea?
thrill/fade?
I'm not a teacher. I speak American English. I've tutored writing at the University of Southern Maine and have done a good deal of copy editing and writing, occasionally for publication.
The novelty would wear off and they would start to drift apart.
I am not a teacher or a native speaker.
So, I'm going to combine all your good suggestions.
What do you think about this?
"I have given this a lot of thought George." He looked at her with apprehension. "I marry you. Then the thrill of our relationship would fade after six months. The novelty would pale and I wouldn't feel a spark of excitement when I hear your voice. After a few years, we drift apart and the next thing you know, we lawyer up to get divorce. So, my answer is no. Let's not get married." George was speechless.
And what about this?
"I have given this a lot of thought George." He looked at her with apprehension. "I marry you. Then the thrill of our relationship would fade after six months. The novelty would pale and I wouldn't feel a spark of excitement when I hear your voice. After a few years, we drift apart and the next thing you know, we lawyer up to get a divorce. So, my answer is no. Let's not get married." George was speechless.
I'm not a teacher. I speak American English. I've tutored writing at the University of Southern Maine and have done a good deal of copy editing and writing, occasionally for publication.