You could put down your bf's shop as experience, as that just shows that you know how to work in the store, which is helpful. The point is to explain what you know, not necessarily how much you got paid, so I would totally recommend putting that down under past employment (just make sure to let your boyfriend know, so that way if Jamba Juice calls he isn't confused and says something like "what? No! She's never worked here!").

Professional references are people who know you professionally (i.e., people you worked with). You would most likely put your boyfriend down, or even any teachers (since right now your job is "student"). Anyone who can vouch for how good of a worker you are, those are professional references. Personal references are people who can vouch for you being a good person.

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So when you're happy (Hurray!), or sad (Aw!),
Or frightened (Eeek!), or mad (Rats!)
An interjection starts a sentence right.