I could use some help with this! [bad word] sure about these and couldn't find them anywhere!

You're my North Star
You're my light
I should thank you, you're the reason
I'm slowly going blind
Oh why, oh why and oh how

You're my sweetener
You're my vice
I should thank you
You're the thing that's
Creeping around my mouth
Oh why, oh why and oh how

But it's not my fault
It never is
At least that's what everyone said
I heard them say 
You can do better than this man
He looks like
Looks like a fish with no fins
Wears only (?) in his pants
Throws his two cents where he can
Sports a horse's grin

You're my platform 
You're my (?)
You're the (step?) that's causing me to
Say all those things that I don't mean
Oh why oh my and oh how
Oh why oh why and oh how
Oh why oh why and oh how

It's not my fault it never is
At least that's what everyone says
I heard them say you can do better than this man

He looks like
Looks like a fish with no fins
Wears only (?) in his pants
Sports a horses grin