I am in the midst of planning my wedding, which as most people know is a long, painstaking process. We've had a long engagement and fairly early on one of our friends began asking us if he would be invited to the wedding (usually after having a few drinks). He is in our circle of friends, but not someone either of us is particularly close to. This started well before we had made a guest list, but even then I knew he wouldn't make it. He'd probably end up on the C or D list.
My response was to never give an outright answer, but to say that the wedding won't be too big and both of us have large families (etc, etc). It was always very uncomfortable, and after this happened a few times things now feel awkward whenever we see each other. He hasn't asked about it in quite a while, but we also haven't seen each other much (for other benign reasons).
What is the best way to respond in a situation like this? I'm looking for a way to defuse the situation as non-painfully as possible, whether that means telling him "probably not", "definitely not", or just successfully deflecting.