"Lasting friendships" refers to close relationships that endure over time and are not easily broken or forgotten. These are genuine and strong bonds between people that stand the test of time. Full definition
For forty two years I have developed long lasting friendships with many of my professional colleagues and know it as a fact that its a small percentage of salespeople that cross the ethical line. (remonline.com)
Your long lasting friendships with your professional colleagues do not include many newbies, if any, I must assume. (remonline.com)
Generally speaking, preschoolers do not often form lasting friendships with peers; their friendships tend to be fleeting. (childdevelopmentinfo.com)