This situation needs to be judged by continuous contact. If he is a job with little separation between life and work, what he said is reasonable. Now that the media is developed, sometimes the information can't be seen. It is understandable that some people use a working micro-signal to contact. Of course, if he is the type that separates work from life, it is not credible. At least for now, the relationship between you can't enter his life circle. You can consider this situation yourself.