When I first started dating my gf, it was obvious she was not into sports, which was just fine and dandy with me. Then, through multiple dates/conversations, I discovered that she didn't really know anything about sports because none of her ex-boyfriends were into sports (weirdos). After quickly discovering how passionate I am about sports, and the Celtics in particular, she took an interest. That interest has blossomed into fandom (if that's even a word), and now she's asking me when the next game is, lol. She was easily influenced and despite being brand new to the game, she really enjoys it and finds solid entertainment out of it.
To date, we've watched 5 celtics games together, and she knows the entire starting lineup. She calls Perkins "the big scary man", she calls KG "the purple man" (because of his dark complexion - not intended to be/sound racist at all), she calls Ray Allen "Jesus", she calls Paul "the 4th quarter guy" and Rondo "the sneaky guy".
That's about all I got, we move in together in a month and I'm super pumped.