Such relationships can last a lifetime and even grow into communication with families. Yes, being timely and scheduling time together expresses love. He can get along with Air signs and analytical sign Scorpio.
What this relationship needs is spontaneity and compromise. The cure for monotony is to allow plenty of independence for each party in the relationship. They want similar things out of life. Too much of the tried-and-true can also prevent you from evolving with the times.