My boyfriend is a native Spanish speaker, and has limited English abilities (A2-B1). He is currently taking English classes in his country so that he can move to the USA with me later this year. My native language is Korean, but I have a very advanced level in English, having done all my higher education in the US. We have been trying to practice speaking in English, but our default language (including any difficult conversation) is Spanish because he doesn't feel comfortable with English and also because he thinks my Spanish accent is cute LOL. Considering that I'm that temperamental Korean girlfriend who went from 0 to B2 in 6 months by constantly arguing in Spanish, I suggested to him that we fight in English instead, but he doesn't want to...

Our primary goal currently is to get him to a level in English so that he can pursue a university degree in the US. However, I am also hoping to bring him to Korea in few years to meet my family, the majority of which speaks only Korean or very limited English, let alone Spanish (my dad didn't know hola is hello in Spanish).

How realistic do you guys think it would be to have him start studying Korean, for instance from next year, and get to a basic conversational level in a year while taking university classes in English? I was thinking that perhaps he can take a Korean class at the university. He is definitely interested in learning Korean, and I am happy to be his conversation partner. However, I'm not sure if that is something realistic since I'm sure taking university level classes in a non-native language will be challenging on its own.

Anyone here have experience concurrently studying two unrelated languages? Have you been successful? I know that Korean is difficult for English native speakers to learn, but I know less about Spanish -> Korean, so I would also love some personal accounts from native Spanish speakers who studied Korean to a conversational level. Thanks!