Yes, without reservation. In any case, I would learn the language of my long term partner even if she was fluent in mine. It seems like something I would obviously have to share with her.
I can’t think of a better reason to learn a language, in fact.
Don’t you sometimes feel it limits your exchanges?
My dad did. It worked out pretty well. Grazie,Pappa!
Wait, nobody in this thread has seen Love, Actually? The Colin Firth story is a pretty clear demonstration of how to fall in love without speaking the same language.
I’d absolutely learn a new language for Colin Firth.
But again, that happens in real life. There seem to be many real-life instances of people from entirely different cultures, nations, languages, etc. falling in love despite having very little ability to communicate. (Yes, I know, little communication isn’t the same as no communication, but maybe there could be an interpreter in my hypothetical to interpret for the two people, etc.)
Would I? Oh, yes, I’d definitely do it for my true love.
Could I? No, not without a lot of difficulty. I have a real learning block in that area.
For 26 years of marriage and 6 years of dating before that, I have been trying to learn to communicate in “Womanese”. I have picked up a few phrases here and there, but overall I’d say it’s taking much longer than I thought. But I love her, so I’ll keep trying!
I love that movie, but that particular storyline annoys me for this very reason. They didn’t fall in love, they fell in lust.
Well, like you say, “very little” isn’t the same as “none.” And having an interpreter is practically speaking the same language! 
I don’t think it takes much communication, but there’s no way it’s truly love without any communication.
Nothing serious ever came of it, but years ago, I had a crush on a deaf girl (she was cute, but what really caught my interest was her taste in literature). We only went out a few times, so there was no need for me to learn much in the way of ASL. But if we’d pursued a real relationship, I DEFINITELY would have had to learn her language. And I’d have been happy to.
I’ve been known to tackle languages because I wanted to read something and I found the translation annoyingly inaccurate. So sure, I think I’d do it for a soulmate.
I see it all the time here in Thailand. Farangs (Westerners) learning Thai for just this reason, and Thais learning English or whatever language. I’ve also seen couples who never learn each other’s language and generally communicate only through their children.
Myself, I learned Thai long before I met the wife, and she English before she met me (naturally, since she was a grad student at the U of Hawaii when we met).
Is that still the case now that you are in Taiwan (if I am remembering correctly)?
As for the question, I am getting ready to start leaning Chinese because of my fiancee, luckily she already speaks English so it is not urgent. So if it was the only way to communicate properly, I would certainly do it as fast as possible.