"It's been the longest one I think either of us had really," the "Red" singer said during the sit down interview.
"When your life changes and you become thrust into this really strange whirlwind where what your life is is different from what other people think your life is. And your life is commented on and your life is written about and fictionalized and all that. Both of us have kind of stuck it out and hung in there through all the different changes we've gone through."
"Longevity is something you really can find very precious and rare in friendships," she added.
Over the past few months there have been rumors that the ladies were beefing because of Selena's on-again and off-again relationship with Justin Bieber. While that might be true, it seems like that's all behind them now. Sel and Taylor most recently hung out together at the 2014 Met Gala in NYC. Check out an adorable video of them dancing around at the gala together in their gowns here.
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Gallery | Taylor Swift's Famous BFFs