Is it permissible to contact a former colleague through an intermediary (the cousin) to check on her and learn her news, in order to avoid misunderstanding and returning to the previous relationship?

What is known today as a love relationship between young men and women is a door to temptation (fitna) and corruption. Marriage is the ideal path for this love, as the Prophet, peace and blessings be upon him, said: "We have not seen for two who love each other anything better than marriage." If marriage is not possible, then they should turn away from this attachment, and each of them should strive to maintain their chastity and occupy their time with what benefits them. If you are unable to marry, then be patient until you are able, and close the doors of temptation, and sever all ties with that girl.