Prolonged social contact creates friendships which may wittingly or unwittingly develop into relationships. Love at work is a reality. It happens everywhere, everyday. There are more working women today than in the previous generations. They are also better dressed or provocatively dressed to exploit their sexuality.
People are social beings.
A recluse would not survive in the working world. Being social, they tumble into relationships. Some are in quest of coupledom. Others have extra- marital flings or serious liaisons. Employers may turn a blind eye to singles having their own social functions.