need opinion if I am overreacting

Thank you. I find it fishy. I don’t even send my best friend that many texts in that period of time, and we talk a lot. So I see no reason for him to be up at that hour talking & texting her. Also I don’t see why he kept it a secret and the girl had to confront him. He wouldn’t need to hid eif it wasn’t something to worry about. I would monitor his texts closely. And if he says its harmless, then he should be able to let you read the text messages…