Observing humans for a fair time , I am not so sure that people will spend their entire life with one person in the distant future . The complications of modern life , the options open to both , the fast changing world . I'm just not sure if "forever" relationships will be the norm . We as people change enormously throughout our lives and there are so many life distractions piling up all the time . So you have two people who will change a fair amount , banking on that they will still want to be together in 40 years and more , and still be compatible … It's a big ask . Is it possible ? , for sure .

So I've been married for near on 30 years . I think I was 22 and my wife was 19 when we met . So now I will list all the things you need to do to have a successful relationship ….. not a chance , I would never be so presumptuous . A lot of it comes down to luck I reckon in the end . If I had one piece of advice I would throw out there . Always make your partner the most important thing in the world to you . If your a team you grow together with a bit of luck . If you both do that it won't guarantee success by any means . But it certainly won't make failure more likely either.