Apparently not. Should it be? Looks like it is mostly faded out of use https://books.google.com/ngrams/graph?content=large+love%2C+big+loveyear_start=1800year_end=2000corpus=15smoothing=3share=direct_url=t1%3B%2Clarge%20love%3B%2Cc0%3B.t1%3B%2Cbig%20love%3B%2Cc0
As a non-native speaker I see it for the first time today.
Most of the hits for "large love" seem to be spurious. Try https://books.google.com/ngrams/graph?content=is+a+large+love%2Cis+a+big+love%2Cis+a+great+love
FWIW, I (native AmE) think "great" is the best English translation in this phrase. I don't think I've ever heard or read "large love," but I can imagine "big love" in a colloquial context like "That's some BIG love he's got going on for her...!" But removing "big" and "large" as accepted alternatives would probably result in a whole lot of failures on this exercise.
UPDATE -- What I neglected to mention above is that "great" is also accepted.