Pure coincidence?

I first met him on Friday at work drinks. We entered into a rather bizarre and random conversation, as one does at the end of a long week. I then bumped into him on a bus on Sunday while visiting my aunt in an area that I rarely go to. We were actually running to catch the same bus. It turns out that that was his 'hood. We left the office at the same time today (it is a large office and we are in different teams, so it was quite random how we individually timed it). We caught the lift together and broke into laughter simultaneously. He accused me of stalking him. I accused him of being rude. It's a good thing he is working in a different office tomorrow as I do not enjoy being falsely accused of stalking workmates. I personally think it was pure coincidence- wouldn't you think so? Let's see if our paths cross again.