maintaining strong relationship

Trust, love and respect plus allocating time weekly to be alone without distractions of family or kids. Open communication and willingness to always work at your marriage

Trust, communication, understanding each other .. of course love is always stronger n merrier for a long lasting relationship

Consciously making time for each other (esp after having kids), to talk and be happy in each other’s company!

Trust, accommodating each other on strength and weakness & love.

There are SO many! I would list communication as the main one.

There are many factors! Main 1 should be communication

Communication is so so so important! And compromise

100% it's communication, trust and respect.

Trust understanding giving each other space

Communication and understanding.