Because it's grammatically correct?

Why do you need a pause between her and though? That's not how you would speak it and you're not using it like you would use ", but blah blah blah".

If you said something like "I wouldn't date her, though she wouldn't date me either" I would understand but your usage seems retarded. Show me the grammatical rule.

"Her though" would imply that Taylor Swift owns "though". The comma separates them, and you would in fact naturally add a faint pause in-between "her" and "though". At the very least you would say "though" with a different intonation than the rest of the sentence.

Stupid english. I would never pause even slightly when speaking that, but thanks for explanation. The latter part might be true.

Don't feel bad just because you said something ignorant.

It was actually a genuine question. I'll be the first to tell you I don't give that much of a shit about grammar. It just looked and read weird to me.

Like I said: ignorant.

It's not ignorant to ask a question, it's inquisitive.

Geez, I didn't expect a sort of Spanish Inquisition.

Mighty superior for just being inquisitive.