It also takes bunnies a *very* long time to fully bond with people. I had my first guy for at least 8 months before I felt like we had bonded, but even then our bond grew again after getting my second bun (over a year after I got him). With my second girl, I've had her for almost 10 months and I don't consider myself 100% bonded with her. Your bond with your rabbit will constantly grow and change, and your bf's bond with him will too.
My husband follows the buns around more than I do and we joke that he "tortures" Otto (by following him around to pet him, while I just let Otto go). We have different bonds with each of the buns, but at the end of the day Otto only kisses DH on the nose, even though DH "tortures" him. So who knows with crazy bunnies! They'll have different relationships with different people.