Know how to put up with. Set your ritual - eat an apple a sign of reconciliation, for example. Finish with a quarrel joint eating an apple - it's too close and keep the number of scandals to a minimum.
Think of symbols that are understandable only to you - "their" language, code words, the special position of the fingers. Give each character decoding and use them to emphasize their community.
Secure collaborative experience. If you have just returned from a romantic trip, then arrange a themed dinner - make it a rule to organize such an evening, whenever you come back from somewhere. This habit will help you smoothly screwed to a normal life, and once again remind the most pleasant situations and events. Keep a small box where you put little things reminding you about the trips - tickets, napkins from restaurants, souvenirs and so on.
Do not hide resentment - Speak them. Sometimes it is difficult to express their grievances words, then please create a special notebook and put it in a prominent place - in any conflict situation, use them and record their wishes there, resentment. Would be great if in addition to complaints, there will declarations of love, gratitude, thoughts.
Sometimes throw a "hooligan" evening - eat in bed, watching movies forbidden, to retire in public areas. Sex in a public place not only make you shake, but will refresh your love life, make it brighter.
The most important habit that will allow you to keep the relationship: remember that once you liked the man for his dignity, you have drawn his character and actions. Every time you want to reproach him for his shortcomings, think about it.