When enjoying this beautiful song, I can't help but ask a question just like why the TH sound of that seems silent when used after the S sound. In my brain, the sound formed itself "recklessat" just as if there was no TH sound. I'm not sure how this combination pronounces and wonder whether my ears have got any problems or it's just about Taylor Swift who enjoys performing this melody in this particular way.

This is about a excerpt from a lyrics of Sparks Fly by Taylor Swift.

The way you move is like a full on rainstorm And I'm a house of cards You're the kinda reckless that should send me running But I kinda know that I won't get far And you stood there in front of me just Close enough to touch Close enough to hope you couldn't See what I was thinking of