United Kingdom, April 11 -- Lena Dunham developed a toxic relationship with the internet after finding fame.

The 39-year-old actress shot to stardom as the creator, writer, and star of the hit HBO series Girls, which premiered in 2012, and Lena now admits to developing an unhealthy obsession with online chatter.

She told the Guardian newspaper: "If you have an addictive personality, which clearly I do, any hit of the dopamine of positivity [is welcome] and there's also a hit of adrenaline that comes from the negative. And then, because you see something negative, you want to see something positive to erase it, and you end up in this cycle.

"It's easy when you're young to feel the internet's a game you want to win.

"I remember breaking...