He doesn’t give you the details of his life. (Where he works, where he really lives, etc.)
Anslem says: Everyone has a right to their own private life, but concealing your place of work and residence is not only odd, it’s a major red flag. Unless you’re dating a secret agent, there’s no reason for him to be so secretive about basic conversation topics. Sounds like someone has something to hide and you should go seek love elsewhere.