DY,
I once heard a story (from Rabbi Abraham J Twerski IIRC) where a young couple were having troubles. Apparently the boy was more at fault. The Rav they consulted (the Steipler IIRC) said what can you expect from him, he has only been responsible to his shtender the last 10 years. Being a good learner does not mean one is a good spouse, and that assumes the boy is serious with his learning.
Girls are expected to be mature and somewhat worldly, while being too worldly for a boy means he must not be a good learner. I have a cousin like that in Israel. Playing the keyboard was considered a mark against him. Maybe it’s different there.