Plenty of people date others at the same time while things are casual, and making the assumption that this is a committed relationship can lead to miscommunication, as you have found out the hard way.
He thought Australia (we're in England) was at least two days in front of us, so he thought he could travel, watch the cricket, and call home to tell us the results and bet without losing. Took nearly an hour to explain his errors and the 24-hour clock.