Congratulations: Kylie Jenner, 27, is engaged to boyfriend Timothée Chalamet I, 28, after the Actor recently threw his fiancée Kylie Jenner a LAVISH Surprise Party for her birthday and also announce they are expecting a… See More

Renaissance World Tour stop in Los Angeles. About a week later, they hit up the US Open together in New York City. They exuded confidence — as evidenced by their heavy PDA — and a source tells ET that’s exactly why Kylie “felt comfortable stepping out with Timothée.”

The source went on to say it’s “because she is confident and secure in their relationship” that she decided Bey’s concert would serve as the first public outing. The source tells ET that Kylie “feels like she can be herself with him” and she “really likes that.”

What’s more, the source added that, besides being very cute and loving with each other, they “also connect on a deep level.”

“Timothée is also a family man and they relate to each other about that,” the source says. “Kylie’s friends and family think Timothée is great and love seeing her happy.”