To clarify, what I mean is that even if the Muslim bloke you date drinks alcohol, smokes, and hardly ever prays or goes to the mosque, he's unlikely to settle for you just refraining from alcohol & pork products, even if you are a devout "person of the book". I was asked to repeat the shahadda on several occasions on the grounds that "come on, it doesn't really mean anything" (I always refused).
If it didn't mean anything there was no point saying it, and if saying one tongue-twisting phrase in classical Arabic instantly converts you to a Muslim, I wasn't having any of it, and certainly not from somebody who was more or less non-practising (apart from not eating pork) except for obsessing about what I believed.
I hope the OP will find that his choice works out well for him.