Who knew? Seventeen-year-old Julio Macias Gonzalez of Mexico City was having dinner with his family when he suddenly went into convulsions and died. Upon examining his body, doctors concluded that he suffered a stroke caused by a hickey from his 24-year-old girlfriend. Yep, the skin-sucking may have created a blood clot that traveled to his brain and led to the stroke.

According to HuffPo:

His girlfriend, who has not been publicly identified, is reportedly in hiding. Sources told Hoyestado.com that Julio’s parents were already upset over the relationship due to the age difference.

This isn’t the first incident of hickeys causing strokes.

In 2010, the New Zealand Medical Journal wrote up the case of a 44-year-old woman who was rushed to the hospital after losing movement in her arm under mysterious circumstances. At first, doctors couldn’t figure out why the woman was having a stroke.

Eventually, they noticed a bruise on her neck and figured out that the suction on a major artery created a blood clot that went to her heart and caused a minor stroke, according to KUTV.com. The woman survived.

So, lesson learned: No hickeys over arteries.