continue

correspondence (reciprocal exchange of civilities, especially by letters)

to correspond (exchange messages, especially by postal letter, over a period of time); to communicate with letters

many years

(used with negatives) for a long time

many years / a long lifespan

(colloquial) a girlfriend (a female partner in a romantic relationship)

(formal) Female third-person singular pronoun; she, her, girlfriend

(literary) they (about women or girls)

(literary) they (about women or girls)