How do we check out our son’s girlfriend? She has pulled some really shady moves and always has an excuse. He is truly blinded by his love for her.
There are plenty of services online that can help you check her out. You also have the option of retaining the services of a private investigator. Follow your gut. You don't say exactly what the "shady moves" are, but obviously it makes you uncomfortable. You are probably right that he is blinded, so you'll have to act as his eyes.