Zayn Malik is the quite one. During his time in One Direction and as a solo act, Malik has maintained a reserve, allowing fans small glimpses of his personal life, but mostly keeping things pretty private. The Mind of Mine singer opened the door a crack on Monday night when he quietly launched an official Tumblr, pointing fans to it with a subtle tweet featuring a moody pic and the URL.

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The landing page is, well, cerebral, featuring his name in huge letters over a parade of MRI brain scans. The rest of the images are mostly grabs from videos, photos shoots and recent magazine and online profiles of the "Pillwowtalk" singer. 

Here are a few of our favorites: