Taylor Swift Run-In with John Mayer ... Y'know What Happens Next

4/29/2016 6:34 AM PDT

Taylor Swift's Run-In with John Mayer at Gigi Hadid's Birthday Party

You can already hear it ... Taylor Swift's #1 song about bumping into your ex at a BFF's birthday, that won't have anything to do with seeing John Mayer Thursday night.

The exes both showed up at Gigi Hadid's huge 21st birthday bash at The Nice Guy. We don't know for sure if they spoke, but we know the place is small enough that they had to at least be aware of each other's presence.

Luckily for them there were a ton of celebs inside to create a buffer.

Still ... the song will be awesome.