I'm going to call my fiance jealous.
Why do you want to call your fiance jealous?
I'm tired of being jealous. I'm jealous that she's taller than me.
It's okay and kind of cute that you are jealous of your fiance. Maybe she is jealous of your shortness. The grass is not always greener on the other side.
Really? Why not?
As long as it's not harming your relationship it's fine. Also, being tall isn't always the best for several reasons.