<human>: Can you give me a shortened version of the text?

I have been on three dates with this guy I met in a bar in my town about a month ago. I like him-- we get along well, he's sweet, he's a gentleman, and we have a lot in common. Plus we have crazy sexual chemistry. However, there's a lot about his past that I don't really feel comfortable with: namely, he has gotten in trouble for some crimes when he was a young adult (it's deeper than that, but PM me for details. He's a Redditor and I don't want him seeing this). He used to do crack with his friends recreationally (i.e. not addicted), he had a really weird job a couple of years ago (again, PM me for details--let's just say this job led him to a breakup with his last girlfriend), and he identifies as polyamorous, but I'm monogamous (i.e. he had multiple serious girlfriends at once). He did say he's not really poly anymore.

He also told me that the last two relationships he had he dated them for about 6 months each, but wasn't emotionally involved. When they broke up with him, he just basically said "it was nice getting to know you!" and went about his merry way. I thought it was weird that he told me this to begin with, considering it was only a third date.

Although he says all of this stuff is in his past, I still don't feel too comfortable dating someone who has been into all of that kind of stuff. It's so weird because he's kinda shy and super nerdy, so I would have pegged him as a fairly regular, clean-cut guy. As for the poly thing, he did say that he most likely wouldn't want to be poly again, but he was vague about this, and he knows I'm not poly. He also hinted that I'm the only girl he's dating right now.

Is it weird that I have these red flags? Like I said, there isn't anything wrong with being poly/doing recreational drugs, but it isn't something I'm into.
<bot>: dating someone who's been poly, has done some crimes, used to do drugs recreationally, and had a sketchy job. Red flags, or am I just being picky?