It's never an easy situation, but there are a few things you might want to keep an eye on:
Frequency: Is it just on the weekends or does it become more frequent?
Quantity: Is he always drinking to excess, or are there times when he has just one or two drinks?
Behavior: Does his behavior drastically change when he drinks? Does he become violent, aggressive, or dangerous?
Dependency: Does he NEED the drinks? If he doesn't have them, does he become irritable or anxious?
These might indicate a larger problem with alcohol, such as alcoholism. Communication is critical here. Express your concerns to him, and observe his reactions. Is he dismissive of your worries? Or does he take you seriously and consider your feelings?
Also, if you're concerned about any legal issues such as DUIs, you might be able to find out through
personal data verifications, provided that you follow all applicable privacy laws. Keep in mind that you might need his consent to do this, depending on your local laws, so consult with a legal professional if you're unsure. A DUI conviction is a part of a person's criminal record and can come up during the verifications. It's a serious offense that could indicate a lack of judgment, especially when it comes to safety.
Remember, your safety and peace of mind are paramount. If his drinking habits make you uncomfortable, it's crucial to address it head-on. Trust your gut feeling and don't ignore any red flags.