“Also, make time to enjoy each other,” she suggested. “I always tell folks to keep flirting, be affectionate without every touch needing to lead to sex, kiss everyday, stay curious about what feels good to your partner and how their needs may be changing, and when you get something wrong, acknowledge it and follow that acknowledgment with a change in behaviour.”
Article source: https://www.huffingtonpost.co.uk/entry/number-one-reason-marriages-fail-therapists_uk_6ae8bc3de4b0283c4577eea1