While these two celebrities appear to be dating, Taylor Swift has not publicly stated she is in love with Kelce. Since the video does not provide a source to their claim, I searched the web for any evidence of Swift making such a statement. The top source to come up was Snopes.com, stating that there is no evidence of Taylor Swift publicly coming out and saying she loves Kelce. To be sure I searched the web again, for if Swift has said this, surely there would be multiple news outlets that would have reported on it, but again I found nothing.
If this were not enough, I checked the YouTube channel the video was posted on to see how legitimate of a source it is. Sure enough almost every video has a clickbait headline, making a statement about a celebrity with large red and yellow bubble letters on the thumbnail, creating a quote that has never been said. While most of things said in their videos are based off of actual evidence, the main claims are not and are purely there to attract clicks and views. Therefore, I conclude that the main claim of this video is false.