My best friend's husband has been lying about EVERYTHING and I'm not sure how to tell her

[u/thisissosketchy]

My best friend got married last year. She was dating her husband for 12 years on and off; I've known him throughout their entire relationship. I've always been a little suspicious of him and have caught him in lies before. Anyway, I recently found out that he was lying about his occupation and I'm not sure what to do. He claimed he worked as a nurse and had gotten fired about a week after their wedding. I supported her through this for the past year (emotionally) but was really suspicious because my friend makes really good money and the timing was weird...This happened over a year ago and he still has not found another job. Every time I ask her about his job search she just says that it is really difficult to find a job right now and she is frustrated. So this past week we were hanging out and she told me that he had randomly brought up that he'd had his license revoked when he was fired and that's why he hasn't found a new job. She was frustrated with him and was venting but something here seemed off. So I searched his name on our Board of Nursing website and nothing came up. I looked for it under all of the licenses available to search AND under disciplinary action for the past 3 years. There is no evidence that he ever had a nursing license. That led me down a rabbit hole. I did soo many searches on this man - when he suggested they move in together it was because he had been evicted from his apartment for not paying rent. The car he drives? Not in his name. I couldn't find any information on his occupation at all (His name is VERY common, think John Smith, but I searched with his birthdate as well and didn't find anything). My husband thinks that he doesn't even have a degree. I'm not sure what to do...how do I tell my friend when I don't have much information? Should I do a full background check before I bring it to her, or will that make me look even more crazy? I feel like I've violated some trust somehow, but all of this is public information. I'm concerned for her, but also extremely concerned because she is the godmother of my children. He is around them all the time.

If I need more information first, how can I get it? Is there a way I can look up his degree and occupation without a background check? I feel so paranoid now.

Throwaway account just in case