Thinking about a 2ND Shiba... Am I crazy?

So, we've been discussing and thinking a lot lately about getting a second shiba. Our Etsuko (Female) seems (to me) to be getting bored lately... She has been acting out a little more, chewing here and there (nothing major). And sometimes I can see it in her eyes, PLAY WITH ME PLAY WITH ME... HEY, WONT YOU PLAY WITH ME??? My girlfriend and I don't seem to be enough for her... I walk her 2-3 miles per day, play with her non stop and am CONSTANTLY side by side with her. The way I understand it, she wants to be near me 24/7 (which I would love TOO), but it's not humanely possible. I've read A LOT and heard A LOT of stories from people about their dogs, and all in all it seems that having 2 pups really helped out and made both dogs happier.

I am open to ANY and ALL comments/suggestions/stories... HIT ME!

Oh, here's the little guy I'm looking into:
http://www.petfinder.com/petdetail/17130874