Private equity giant Blackstone Group is taking a majority stake in the owner of Austin-based dating apps Bumble and Chappy. Under the deal, Blackstone will acquire MagicLab, a London-based company that operates a suite of dating apps including Bumble, Chappy, Badoo and Lumen. The transaction values MagicLab at about $3 billion and comes less than a year after Blackstone launched a growt