If I was working in my home country 100% of the time where my wife, kids, parents, brother and sister all live; if I was home every night and had most weekends off work and could spend time with my family; if I was thoroughly integrated into the society as a member of a society, club or organisation etc; if this were the case it's most likely staying faithful to one's partner is much easier. The problem is when you work away from home in foreign countries for long periods of time. You get bored, lonely etc. In some countries there are many opportunities to meet people of the opposite sex. Under all these circumstances it is far more likely you will flirt with the opposite sex or end up having a sexual encounter. The only thing is to make sure your partner doesn't find out.
If I was working in my home country 100% of the time where my wife, kids, parents, brother and sister all live; if I was home every night and had most weekends off work and could spend time with my family; if I was thoroughly integrated into the society as a member of a society, club or organisation etc; if this were the case it's most likely staying faithful to one's partner is much easier. The problem is when you work away from home in foreign countries for long periods of time. You get bored, lonely etc. In some countries there are many opportunities to meet people of the opposite sex. Under all these circumstances it is far more likely you will flirt with the opposite sex or end up having a sexual encounter. The only thing is to make sure your partner doesn't find out.