SUBREDDIT: r/relationships
TITLE: Me [32 F] with my boyfriend [29 M] five months, worried about the future
POST: Hi, so I know my post title sounds ridiculous BUT I'm thinking about the future.  I'm 32, my sweet, lovely, wonderful, I see a future with boyfriend is 29.  Big deal, right? 

Except that he will most likely be relatively to very wealthy based on his grad school field.  This is not why I picked him.  I have my own money.  I would prefer a guy who makes a normal amount of money.  

But all I can see is him becoming successful and ditching me for a 22 year old supermodel, even though he seems very into me, talks about the future, I feel a future with him, etc.  I'm just paranoid that once guys get successful, they all want the hottest girl they can get, and that isn't me.  Should I dump him because this is probably what will happen because this scenario is always what happens? That successful guys invariably dump their similarly aged wives for a hot, young thing? Or at the very least, cheat on their wives?
TL;DR: 
Do I dump my great boyfriend because if he becomes rich and successful, he'll probably dump me for someone much hotter and younger?