Fellow sag and aqua

Okay...I'm so hurt with a fellow sagittarian.. I'm an aqua for reference..have been seeing this sag boy for quite sometime due to circumstances we had to part ways romantically..

However since we both are in the same proffesion we were in touch via social media aka LinkedIn n stuff for few mths since the time we parted ways..However today I found out he blocked me out in social media out of the moon..I'm abit upset..we did like each other..but like I sd due to circumstances we had to stop seeing each other romantically..otherwise they were no issues between us..we were good.. Why would he do tht me? So heart broken I wished him luck n left n was watching him from far..why would he block me all of a sudden with no reason? Gosh..this is insaneee