Insensitive

If you want to eat with your friend earlier, then tell me so that I can arrange my own dinner. For some reason, you decided not to tell me and so every week I have to eat alone while you two look on. I feel hurt by your insensitivity. I feel like telling you to just meet me there so that I don't need to waste my time and petrol to travel half way home just so that all three of us can go in one car. Insensitive. And you're not even aware of it.

Maybe it's best to follow someone's attitude. Absence makes his/her presence more valuable.