Mashup Monday: ‘Girlfriend vs. Boyfriend’ *NSYNC + Justin Bieber [VIDEOS]

If you loved *NSYNC, then last night's reunion on the 2013 MTV Video Music Awards, might have seemed like a tease. So today, enjoy this mash up featuring the guys and Justin Bieber. The songs work well together, and so do the videos.

See both videos separately below.

*NSYNC: "Girlfriend" featuring Nelly

Justin Bieber: "Boyfriend"