More birthday parties

When our son Steve was in the fifth grade he could not decide who to have to his birthday party and since it was only about 15 boys I thought we could invite them all and serve it in the front room minus the furniture and they could sit on the floor. I think we said no gifts so it would include everyone and not be a hardship on any. There were 16 boys but I counted only 15 were there and we saw one walking by on his way home so I went out and got him and brought him in to join the others and he told me he did think I really mean't to include him. I hope Steve enjoyed the party but he was polite and did not tell me he did not,