re: Dating advice: is dating a ‘dumb’ girl sustainable?

If you have similar values and her personality compliments yours, it’s possible.

Intelligence is far less important than how she treats you and others.

You say she has no depth, but it could just be a mask. She might be into some stuff that she thinks is weird and just isn’t comfortable enough with you to reveal. Even the kinda ditzy/superficial/basic girls I’ve dated have all turned out to have some kind of goofy niche interest that they hid until they were comfortable in the relationship. Usually, it was something pretty innocuous, but girls are merciless to each other.