Please note that you can avoid adultery. It is within your power to do it, if you really mean it. Carelessness is one of the major cause of affair in marriage not devil in the real sense of it as many people always claim when they fall into error. So follow the following simple rules you will never fall into adultery.

1. KEEPING "MARRIED" OPPOSITE SEX AS BEST FRIEND
Many have often asked it as a question on this platform. The truth is, why very few have maintained the line, very many persons failed in time. So, never make anybody of the opposite sex your best friend with whom you share intimate discussions.

2. SPENDING QUALITY TIME WITH THE OPPOSITE SEX
We often pride ourselves as been big guys and ladies, thereby thinking we can resist any temptation. This has led many to be unfaithful to their partners. Never be with anybody of the opposite sex at the time your spouse must never know you are there.

3. CASTIGATING YOUR SPOUSE IN PUBLIC
Many are guilty of this, even though they are naive of the possible consequences. Never talk evil about your spouse in the presence of other persons, they will know you are not happy in your marriage. Leading them to take undue advantage of that by showing you fake care and give you what you lack with your Spouse only to cause more damage to your marriage.

4. AVOIDING THE USE OF WEDDING RINGS
This may not sound more of a big deal to many, but it does contribute to create a non-verbal awareness of your marital status even from a distance to those who may want to pick interest on you. Thereby prevent the unnecessary temptation. So, be proud to use your wedding ring especially when you and your partner live apart/travels, etc

5. AVOID RECEIVING UNSOLICITED FAVOURS
Yes, everyone may at one point or the other need assist to facilitate/ease things. The truth is, if caution is not applied, it may send the wrong signal. Thereby allowing the giver the golden opportunity to one day place demand on you. As a way of balancing the scale.

6. CONCENTRATE ON YOUR SPOUSE'S VALUE
There is always a unifying factor that keep and bring friends together. Avoid unnecessary comparison between other persons to your spouse. Instead, work and concentrate more on the positive side. And be the strength to his/her weakness. What you are seeing in other's lives my just be show biz. Grass is greener from a distance.

7. AVOID KEEPING MALICE
The power of communication cannot be over emphasised in marriage. Creating malice even after a misunderstanding will further deepen the issues. Which could push your spouse into another hands. So, no matter the provocation, try to always find a better way rather than keeping malice to handle the problems within yourselves.

8. KEEPING LIKE-MINDS AS FRIENDS
The company of friends you keep as a couple go a long way to determine how far your marriage will succeed. If you have careless type of people around you as friend, you will definitely be tempted to do like them.

9. SEXUAL INCOMPATIBILITY
The issue of sexually satisfying your partner is very important to the success of a good marriage. Unfortunately, this has always remained one of the major causes of unfaithfulness among many marriages. The bigger issue is that the partner only complain or pretend about been sexually satisfied to their spouse instead of seeking to find solution to the issues together.

10. Please, you may add yours here.

BE FAITHFUL TO YOUR SPOUSE AND YOU WILL BE GLAD YOU DID.

Nice points although I'll counter some but lemme start with the below [Point 4]:

4. AVOIDING THE USE OF WEDDING RINGS
This may not sound more of a big deal to many, but it does contribute to create a non-verbal awareness of your marital status even from a distance to those who may want to pick interest on you. Thereby prevent the unnecessary temptation. So, be proud to use your wedding ring especially when you and your partner live apart/travels, etc

What happens if the spouse loses his/her fingers or both hands, what happens?

dfrost:
Nice points although I'll counter some but lemme start with the below [Point 4]:

4. AVOIDING THE USE OF WEDDING RINGS
This may not sound more of a big deal to many, but it does contribute to create a non-verbal awareness of your marital status even from a distance to those who may want to pick interest on you. Thereby prevent the unnecessary temptation. So, be proud to use your wedding ring especially when you and your partner live apart/travels, etc

What happens if the spouse loses his/her fingers or both hands, what happens?

That is very well understood, unlike those without physical disabilities, yet deliberately avoid using their wedding rings.