1. Take contraceptive measures: If you have no plans to have children, then contraception is a problem that must be paid attention to in cohabitation. You can choose to use condoms, oral contraceptives, contraceptive rings and other contraceptive methods.

2. Planned economy: The economic problems of cohabitation need careful planning. You can make an economic plan and negotiate the monthly bill and living expenses to ensure that there will be no economic contradictions.

3. Prepare daily necessities: you need to prepare daily necessities, such as toiletries, towels and bedding.

4. Home decoration: If you plan to live together, you may need to redecorate or adjust the layout of the house to meet the living habits and needs of the two.

5. Mutual respect: In cohabitation, we need to respect each other's opinions and feelings, and don't force each other to do things they don't want to do.

6. Share housework: housework in cohabitation needs to be shared, and a housework plan can be worked out through consultation to ensure that both parties can share housework and keep the home environment clean and hygienic.

7. Maintain feelings: cohabitation needs to maintain each other's feelings, communicate more, care more and support more, and jointly create a warm and harmonious living environment.

In short, couples need to make full preparations before cohabitation, including material preparation and mental preparation, to ensure the smooth progress of cohabitation, and at the same time, they should pay attention to maintaining each other's feelings.