high chance she got to know another guy , either in singapore or vietnam. Not that i am selffish, but i do not like my wife to mix around with vietnamese gals in singapore. She also doesn't like to mix around with them. Gossips and jealousy are always present in these group of people. Unless your wife has strong ideas and know what she wants in life, high chance that she will be affected by others and this will bring disaster to the marriage and family.
There's a trend now going on in Vietnam. Old man likes to make out with young gals between 16 to 19 years old, while younger man around early 20s like to make out with ladies in their 30s to 40s. I am sometimes quite worried when i am not around in the cafe with my wife, but i guess she has to know what she wants in life. I cannot be around her all the time to ward off all these unwanted attention from young man. So bros whose viet spouse is going back to Vietnam for TET, do call them more often. Or the best is to go with them. Your presence will keep your worries at bay