How Taylor tamed bad boy Travis: His sordid sex rules, vile tweets and past drug use made him notorious... then he did something that nearly ruined their romance. Friends reveal how Swift stepped in

The day, however, became a tragedy when a mass shooting broke out, in which 22 people were injured, including multiple children, and one woman died. 

Although injured fans were rushed to the hospital, the celebrations continued.

Kelce made an ill-timed appearance at the local Granfalloon Restaurant and Bar, taking selfies with police officers, an open beer in hand.

The optics prompted huge backlash, with his behavior said to not be 'a good look,' and that of a 'caveman' and a 'douchebag.' There was even talk among Swift's fanbase that it should have been grounds to end the relationship.

That night, Kelce took to X to address the shooting, writing, 'I am heartbroken over the tragedy that took place today. My heart is with all who came out to celebrate with us and have been affected. KC, you mean the world to me.'

But it's not just the hard-partying that has embroiled Kelce in controversy.

As his now-illustrious NFL career was first taking off, he was, naturally, very active on social media - and the posts came back to haunt Kelce when his romance with Swift went public.

Screenshots of posts that appear to be from the early 2010s - many now deleted and littered with misspellings - were widely shared online and ridiculed for remarks deemed crude, misogynistic and fat-shaming.

Among them was an old tweet reading: 'As a man, You have something wrong with you if your going for girls that weigh more then you!!'

Another read, 'haha when fat people fall, its like slow motion entertainment, cuz they never JUST fall, they always tumble n gradually hit the deck #comedy.'

Some posts, however, merely revealed his boyish tone online. In one widely circulated tweet, he wrote: 'I just gave a squirle a peice [sic] of bread and it straight smashed all of it!!!! I had no idea they ate bread like that!! Haha #crazy.'

Swifties were quick to contrast Kelce's boorish behavior and silly posts with Swift's eloquent lyricism and carefully crafted girl-next-door image. Kelce, for his part, acknowledged the undeniable difference head on.

'I've never been a man of words. Being around her, seeing how smart Taylor is, has been f***ing mind-blowing. I'm learning every day,' he told the Wall Street Journal.

Before Swift, of course, the NFL star was an eligible bachelor, appearing on his own reality dating show Catching Kelce in 2016, which only aired for one season.

But it was his 'dating dealbreakers' - which he revealed that year on Andy Cohen's show Watch What Happens Live - that raised eyebrows when the clip resurfaced as his romance with the popstar blossomed. 

When asked about women who don't enjoy oral sex, Kelce replied, 'Sounds like a dealbreaker to me,' prompting laughter from the audience. He also revealed he preferred to sleep with a woman before the third date, adding that it might be a dealbreaker if it didn't happen by then.