Drake started the blowout NYC nightclub brawl last summer with Chris Brown ... by sending Brown a handwritten note that read "I'm f***ing the love of your life" -- this according to Chris Brown's bodyguard.
According to the lawsuit, obtained by the NY Daily News, Patrick Strickland -- whose head was badly bloodied during the flying bottle attacks -- is suing Drake and W.i.P. nightclub, where the brawl took place last June.
Strickland says Drake's note -- a clear reference to Rihanna -- started a verbal altercation, which then led to the all-out melee in which several people were badly injured ... including Strickland and several other clubgoers.
According to Strickland, the club is also responsible for over-serving Dreezy -- and seating him way too close to Chris ... in light of their public beef over RiRi.
He's suing for unspecified damages.
Chris Brown's Bodyguard
Drake Started Club Brawl
With 'F***ing' Rihanna Note
4/10/2013 2:50 PM PDT BY TMZ STAFF
Get TMZ Breaking News alerts to your inbox