Travis Kelce has reassured his brother Jason that his girlfriend Taylor Swift “thrives” being in a room packed with celebrities. The 36-year-old center for the Philadelphia Eagles got to witness what it was like being ultra-famous when he shared the VIP suite with the 34-year-old Grammy winner and a host of famous people, including the likes of Sir Paul McCartney, Ice Spice, Shaquille O’Neal, and Blake Lively, at the Super Bowl VIII this past weekend. And Jason admitted it was eye-opening to see what famous people have to deal with. Speaking on his and his brother’s ‘New Heights’ podcast, he s…