Nobody can really answer this except you, as it’s obviously your choice what boundaries you want to have. I recommend you get really clear about what you want in life and your relationships, really grounded in your values and then you won’t have to look out into the world to find out what is ok and what is not. You’ll know from deep within yourself. And obviously through communication with your husband.

The “motive” of the man could be absolutely anything, I’m not sure on a forum we are apt to judge what this guy is after, if anything.