Haskel Syndrome is a syndrome wherein a person (typically a male) flirts with a lot of girls in an online setting using apps such as Discord, Instagram, Facebook, Snapchat, and many others. A typical person diagnosed with a Haskel Syndrome typically flirts with at least three girls and a maximum of eight girls at once whom they met in an online setting.
I was surprised to know that my friend has a Haskel Syndrome, no wonder why he flirts with four girls online all at once.