saiariddle is my latest friend to succumb to the wonder of our show. After a couple of years avoiding it, despite me and others squeeing over it, she just happened to tune into "Wishful Thinking" and loved it. Now she's watching Season 1 thanks to Netflix, and even bought Seasons 2 & 3 on sale. I know she wanted to avoid watching any more Season 4 until she's seen the rest of the series, but she fell for the repeats and watched "Lazarus Rising"... She's also fallen for Jensen Ackles. All my fangirling on LJ has finally paid off. :D

Anyhoo, I don't know how to help you and your friend. I haven't tried to convert anyone; they've done so on their own... with my example. ;)