Is it any less enjoyable to play tennis if you called your friend to play tennis instead of them calling you to play tennis? Isn't the point that you are playing tennis?
It might be if you spent the whole time believing that your friend didn't really want to play tennis, but was just going along with it to make you happy, or shut you up, or get you to stop calling, etc., etc. After all, if your friend *really* wanted to play tennis, he would have called right?
