Being flirty is a way of letting a guy know you're interested without making a fool out of yourself.
There are very important and practical issues raised by following this alternative route which says, let's look to material conditions, to the systems of production, to the needs that human beings have, and to competing alternative solutions to the satisfaction of those needs.
Major sports are major parts of society. It's not anomalous to have people who love sports come from other parts of that society.