I'm curious if you know each other personally or he just slid to your PMs?

But whatever the case, I'd tread caution in his next recommendations.. or better yet, recommendations from anyone that involves money as scam PMs have been rampant. I would say, some scams are relatively better executed that the others as well. For instance, some could let you withdraw first to gain your trust.

BTW, good job on spotting the red flags and acting on it.