whyteknight said It's way cooler to say I am ...
It's way cooler to say I am in a complicated relationship than to say I am single :("

No, it's way cooler to tell it like it is - "In a relationship / married / single".

"It's complicated" just shows that either they are players wanting sympathy from gullible guys/gals or they simply confused and don't know what they want, neither of which is any good relationship material and to be avoided or kicked out asap - until maybe later when they get clearer/less hazy.