ないで

[QuakerBits]

hey guys. I was wondering if this sentence is appropriate for ないで

彼女じゃないで、寂しくなる。愛してるんだから。
Without her, I would become lonely. Because I love her.

I'm not sure if ないで is appropriate in this context, OR, if じゃない is even the right word to put after 彼女.

Also, I've been trying to use short forms, so if I made a mistake, let me know(:

[Ongakuka]

I'm not sure if ないで is appropriate in this context, OR, if じゃない is even the right word to put after 彼女.

Sorry, it isn't but the 'because I love her' part is perfect of course.

Without her, I would become lonely.

Maybe 彼女なしには、寂しい自分である

Correct usage of ないで：

寝ないで勉強をしなさい　（Basically a negative 'te' form)
何も言わないで食べ続けた

[richvh]

I'm thinking along the lines of 彼女がいないのなら、私は寂しくなる。

[NileCat]

I would phrase it like ～なしでは.

It reminded me of this old love song.
http://www.youtube.com/watch?v=fsaSEudfw1k

[Shiroisan]

How about
彼女がいないと、さびしくなります。