@j Starfire will have you eat alien bugs for the rest of your life, so no marriage there.
While all three are unstable, Tera is the most so, and also NTR'd Beast Boy, so hard pass on her.
Raven is the best marriage material, Starfire sex would be cosmic, and Tera is just a basic bitch, so toss her into a coffin.
@coded_artist I feel like Starfire would make a great wife. She is very compassionate, kind, and caring.
I like to cook
I'd at least be willing to try her cooking every now and then
Bear hugs are the best