Chatting other ladies poll. (YOUR STAND)

Hi mga momshies! Ask ko lang ang stand/opinions niyo about this scenario mga momshies. Your husband is working and your are full time mother of a toddler. Your husband line of work is meeting a lot of people. LOT OF PEOPLE. Sinabihan nyo na si hubby nyo na wag mag chat or mag reply ng chat sa mga babae unless related work. He has a dummy account sa social media which is aware ka naman sa dummy account nya. Purely working related people ang sa dummy account nya. As far as you know. Then, naiwan ni hubby ang phone nya kasi bath time na ni toddler nyo. Now, tinignan mo phone nya and he is using his dummy account. Tinignan mo ang chat msgr nya. You saw couple of girls/women na nag-cchat sa kanya. Mostly, "Good morning sir", "Hi sir", "Good night sir". Some of them are married, some in a relationship and some are single. He always replied to their chat by saying "Good morning", "Hi" and "Good night". Now, this is my question to all momshies. Should you be feel a little scared na nag rreply sya sa chat ng iba? Is that tantamount to a mild cheating (may term ba ganyan?), or just ignore it. Dahil sa line of work nya and being nice lang. Be nice po sa explanation. Kasi somehow i feel a little bit low-esteem. Thank you, momshies. #advicepls