Hmmm🤔

So my husband wants to get a dna test on our child. We have been married less than a year but have been together for 4. He has another child by someone else and she looks exactly like him but my daughter(with him) looks like me and he said he wants a dna rest because she don’t look like him. I know it’s his but it’s the fact of why he wants a dna test. Is he wrong? Am I wrong? What should I do?