I'm not sure why you are asking? Are you unhappy in your relationship? Usually unless you are single, I would say it is not material if a man is interested (as they generally are programmed to be!) or not, since it's down to if YOU are interested or not. It seems to me, trying to look at it impartially, once he used your discount card and once he paid. That seems fair and in friendships people often try to keep the balance, so that one person doesn't end up being resentful.
Please let us know if there is something more to your question.
All the best,