Name the basic secrets of having a long-lasting relationship?
Respect and open communication. Being in a relationship does not mean you both become mind readers; if something is on your mind in regards to the other party just come out and say it. The other person will either respect what you're saying and work on it with you together or they will not, and if they do not then it may be time to reconsider that relationship.
Because in the end a relationship is a choice. If your partner is concerned about something they make a choice to bring it up, and you make a choice to either work it out or walk away and that's what makes a relationship long-lasting or not.