She is impressed? Well damn!

Alternatively:

She is horribly embarrassed at how insanely corny her sister's boyfriend is.

Or..or..she finds him HOT for being such a MAN..unlike all the dicks she has had...and not just in her BADUM TSH!

she has a BF she actualy fought for.

Or... that is Faye and she's disguised as Dawn to see if he's been putting on a show the whole time. Like if the action on the bus was him getting caught. That his true nature was always using Faye for sex and he'd run away rather than dig in his heels if any real trouble came along and inconvenienced him.

It could also be that it is Dawn and she's envious of what her sister has found. Dawn is a sex addict of sorts. She has probably fully explored her sexuality, but that doesn't mean she's found love.

Or maybe she's aware of some complicated situation that's going to arise in the future and she pities the misfortune about to befall him, but at the same time she's happy for her sister.

Something I worry about is the whole twin sister type situation. And this is even worse because they can practically be identical without a doubt!
If he's not paying attention all the time, how will he know who he's talking to?
What if they combine bodies somehow and he's having a threesome and has no idea?!

she's a shapeshifter, she can have green blush if she want to

Yay! Dawn isn't a complete bish!

bish dicks, fried bish, grilled bish, farmed bish, wild bish....all kinds of bish

"Fuck, now I want him."

Just waiting for the mumbled "Fuckin' Dork..." and the hidden laugh/smile

Wonder what she's thinking.

Damn it faye why did you get the good one when all I find are meat heads.

Well. Ok, then.

Why do i get the feeling the next part will be her standing behind him or to the side... looking like or crying from what he has said.

I couldn't even tell that she was blushing before I read the text...

Dawn just felt her ovaries shudder at the sheer amount of MANLY Mike just exhibited.

Amount is off the charts.