Halsey surprised fans when she revealed that she is expecting her first child! The26-year-old singer showed off her baby bump on Wednesday, also tagging her boyfriend, Alev Aydin, in the post. So who is Aydin, the 37-year-old who has captured the singer's heart and is the father of her child?The couple was photographed together back in October, when they were snapped buying art supplies in Los Angeles.