WhenSwift first started dating John Mayer, she was 19 years old.

The relationship began in November 2009 and fizzled out in early 2010 (viaCosmopolitan).

She would later go on to dateConor Kennedy, another relationship where Swift’s style notably changed.

Taylor Swift and John Mayer posing

However, there was something that was different about Swift’s look, despite the similar fashion choices.

Plus, from that moment on, Swift seemed to sport red lips far more often.

Taylor Swift and John Mayer performing

Taylor Swift at 2010 AMAs