I tried getting a spare key for my pregen from my local dealer, and was told that they don't handle keys. I was amazed.
Look at this page under the heading "What if I lose all my keys?". It looks like there's a way out, but I'm not sure if this applies to newgen 250s like your boyfriend's.
https://faq.ninja250.org/wiki/What_d..._about_keys%3F