Thanks to organizations like Half of Us, most teenagers now understand the seriousness of depression and threats of suicide. These things should never be taken lightly.

That's why it's especially heartbreaking to hear the story of 18-year-old Conrad Roy. Last summer, police discovered his body after he had apparently died by suicide in his truck. After a lengthy investigation, The Bristol District Attorney claims Roy's girlfriend, 18-year-old Michelle Carter, “strongly influenced” his decision to take his own life through more than 1,000 text messages over the days leading up to his death. Court documents show that Roy even left his truck at one point, no longer wanting to end his life, but Carter texted him to “get back in.”

After Roy's passing, Carter made a large public display of her grief by sending out numerous (since deleted) tweets about how she missed him. She even helped organize “Homers for Conrad,” a fundraiser to raise awareness about suicide.

Prosecutors officially charged her with involuntary manslaughter on Friday. If convicted, she faces up to 20 years in prison. We'll continue to follow this disturbing story and update you on any developments.

If you or anyone you know is dealing with depression and/or considering suicide, it's extremely important to tell a parent, teacher or counselor, or call (800) 273-TALK and visit HalfofUs.com.