Kristen Stewart, who did not confirm nor deny her relationship and break up with former assistant Alicia Cargile and the recent dating rumors with "Twilight" co-star Taylor Lautner, now faces another controversy. Robert Pattinson's ex-girlfriend is rumored to be dating PVRIS frontwoman Lyndsey Gunnulfsen.

Stewart and Gunnulfsen were spotted hanging out the backstage, during PVRIS' concert in New York, and according to reports Gunn could be the actress' new love interest, Celebrity Laundry learned via the report of Glamour. This unnamed source reportedly told the magazine that the "American Ultra" actress went to the band's concert to see the 21-year-old rock singer.

This new dating rumor got a lot of people asking who Pattinson's ex-love is dating. If it got you curious too, here are the five things you should know about Stewart's rumored girlfriend.

1. Her real name is Lyndsey Gunnulfsen.

Gunn's real name is Lyndsey Gunnulfsen. She was from Boston, Massachusetts, and was born on March 15, 1994.

2. Before PVRIS there was Operation Guillotine.

Stewart's alleged girlfriend was in a band called Operation Guillotine, together with her fellow PVRIS founders Brad Griffin and Kyle Anthony, according to FamousBirthdays.com.

3. She has a lot of angst and anger.

Gunn shared during her interview with Idobi Radio that she has a lot of angst and anger in her, and her brain could get dark and weird. However, she also said that she liked pretty-sounding and ear-pleasing things.

Her music is special because she combines these elements, saying it's a nice balance.

4. Gunn was inspired by Paramore.

She first saw the rock band when she was in the seventh grade. She told Radio.com that Haley Williams inspired her, and from that night on, she realized that's what she wanted to do.

5. She hasn't been always open about her sexuality.

Gunn admitted that she used to want her sexuality to be private until she learned how important it is to be open about it. People's different views toward sexuality had always been an issue, and she said that it would be good to have an open mind and speak about it.

"The more it's talked about, the more accustomed people become to it and it's not an issue any more," she told Alternative Press.

It was previously reported that Gunn and the Love, Robot frontwoman Alexa San Roman were dating. In fact, it started in 2012, and there have been no reports that they broke up.

Stewart, on the other hand, was recently confronted by some reporters at the LAX, asking her about the status of her love life, but the actress did not respond to any of their questions.