Robyn Lively/Instagram Blake's complaint was filed ... "I hope that my legal action helps pull back the curtain on these sinister retaliatory tactics to harm people who speak up about misconduct ...

Robyn Lively on being part of ‘Cobra Kai’: ‘A dream come true’ Robyn Lively, Blake Lively’s sister, tells Fox News Digital what it was like being part of the "Karate Kid" franchise ...

This has included Lively's good friend Taylor Swift, who is allegedly stepping back from the relationship ... who is married to her sister, Robin Lively, appears to be throwing his thoughts ...