Most Helpful Guy
I'm Going To Give You My Unlicensed Professional Opinion, Maybe Over Time He Thought The Relationship Could Come Back Together, Got Tired Of Waiting & Hoping So Now Decided To Let You Go Or He May Of Forgotten About It & Decided To Take You Off, Either Way iWouldnt Worry About It, Ignore It & Continue On With Life...
Most Helpful Girl
It's weird because you should have deleted each other immediately. Other than that, nah, he probably just now realized you were still on there and forgot about you being on there the same way you did. No biggie.