Amber Portwood has been arrested for domestic violence.
Granted, this is old news for anyone that has followed the Teen Mom OG universe even semi-closely over the past several months.
But the return of this MTV franchise on Tuesday night focused almost entirely on Portwood's alleged assault last July against then-boyfriend Andrew Glennon, taking viewers behind the scenes of what was going on at the time.
On the show, Portwood confessed that she regretted the way that things played...
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