Now you've got me talking in clichés

 Life is hard 

so you need a little sentimentality

smoothing out the hard edges

Now you've got me talking in clichés!

So you need a little sentimentality?

I've got some in the back room

Now you've got me talking in clichés

there is no "you" here, though

I've got some in the back room

but I don't think you want me to go back there

there is no "you" here, though 

Once you realize that, the jig is up 

But I don't think you want me to go back there 

Life is hard

Once you realize that, the jig is up

smoothing out the hard edges