But Swift’s perhaps the most interesting collaborator onEvermore?

Her boyfriend,Joe Alwyn.

And naturally, like the rest of theFolkorecrew, he made his return onEvermore(viaEntertainment Tonight).

Taylor Swift

Meanwhile, sources say that Alywn remains a “constant” for Swift during a challenging time.

“Joe has provided such a great support system for Taylor.

“Joe has helped Taylor with her music, inspiring it.

Joe Alwyn

She is so grateful for him and in love with him.

He is her cheerleader and rock.

Plus, in her video for " … Ready For It?”

Taylor Swift