To keep a relationship strong, it is very important to keep some things in mind, otherwise the relationship gets spoiled.
If you are not paying attention to these things in relationships then your relationship may turn sour.
Always respect your partner because if you do not do so, your relationship becomes useless.
Respect each other, if you do not have all this then your relationship starts weakening.
If you make a mistake, admit it immediately, if you don't admit your mistake you will be seen as a liar.
You should give time to each other, by not giving time your relationship becomes very weak.
If there is a rift going on over some issue, then you should think carefully and correct it.
You should talk openly, if you talk with things in mind then your relationship will not be able to work.
You should always have faith in your partner, otherwise it seems that you are living under compulsion.