Halsey shocked fans when she announced her pregnancy on Wednesday, Jan. 27, posting a baby bump pic on Instagram and tagging new boyfriend Alev Aydin. But who is he?

The 26-year-old pop star and the 37-year-old screenwriter and producer have only been photographed in public once, last October, while they shopped for art supplies in Los Angeles. However, the two have never confirmed a relationship until now and have also remained so low-key that they never sparked widespread romance rumors. They even got matching tattoos last year, during a Southern California getaway, and that went under the radar.