Celebrity couples ruled Instagram this week

This week, Instagram was all about relationships.
Aside from the Taylor Swift-Kim Kardashian feud, celebrities shared a whole lot of love in the form of sentimental throwbacks, engagement announcements and tales of friendship.
In addition to all the mushy romance, a few of our favorite celebrities like Lady Gaga and The Rock shared big news, Zayn Malik got a seriously impressive tattoo and Mark Zuckerberg played sports...sort of. 
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