There is such a sentence in "Farewell to Cambridge": I went quietly, just as I came quietly. As the saying goes, when love comes, it is silent. It's the same when I love to go, disappearing. How passionate you love at the beginning, how thorough you are when you don't love later. When a man doesn't love someone at all, he doesn't necessarily say bad things, but he does have the following three manifestations. 
1. No longer follow you
I once read the story of a couple. As in many love stories at the beginning, boys give girls endless care and make girls feel that they are the happiest people in the world. But things will spoil, and enthusiasm has a deadline. Later, the girls couldn't wait for the boys' daily pick-up and drop-off. It was pouring rain, and the girl called ** to him, and he asked the girl to take a taxi home. Let the girl be unhappy, he turns a blind eye. The girl had a stomachache and wanted to go to the hospital, but the boy said that she was too hypocritical, just drink some hot water and endure it. In the end, the girl took a taxi to the hospital alone. 
Some people say:
As long as you've seen someone love you, you'll naturally know what it's like when they don't love you.When he first fell in love, he paid special attention to your every move, and no small emotion could escape his eyes. In the end, when love is scattered, you are no longer the sun he puts in the palm of his hand. He is blind to everything about you. When a man doesn't love someone, he will automatically block everything from the other person.
2. No more contact with you
In the TV series "Fearless", Luo Yingzi experienced the feeling of falling from heaven to hell on her husband Liu Ming's 30th birthday. Husband Liu Ming had an extramarital love affair with his best friend, took away all his property, and ran to the United States, and Luo Yingzi was instantly in debt. The number she was familiar with had become empty. She ran to her in-law's house to beg Liu Ming's ***, but the other party just refused to tell her. 
She asked her in-laws to tell Liu Ming and asked Liu Ming to come back to end all this.
But I still couldn't wait for Liu Ming's reply. The house was taken away by the bank, and Luo Yingzi still sent an email to Liu Ming with hope, which was also lost. In the adult world, not replying to you is an attitude, and not contacting you is an end. You're so anxious, and there's no response from the other person, everything means you're no longer important in his eyes. No need to ask why, no longer contact you, that's the best answer. Someone who truly loves you can't not connect with you. If he suddenly stops contacting you and disappears into your world, he must be out of love. 
3. Don't touch your body again
In the TV series "Shining Her", there is a clip that resonates with many people. Jing Zhiqiu married Wang Liren, and after marriage, the two gave birth to a son and had their own company, which seemed to have a happy life, but in fact, problems had quietly come. The child is getting bigger and bigger, and Wang Liren only has work in his eyes. Busy with endless work and endless meetings, he slept directly in the study every day when he went home. What's more, he and Jing Zhiqiu haven't lived as husband and wife for more than a year. 
Jing Zhiqiu felt that something was wrong, so she tried her best, wearing ** pajamas, spraying intoxicating perfume, and doing everything she could to please her husband. But Wang Liren didn't appreciate it, didn't raise his eyelids, and accused her of disturbing his work. Jing Zhiqiu was extremely depressed, and the estrangement between the two became deeper and deeper. It is said that "sex is love, and love is sex." "In love, sex is the most direct expression of love. When a man falls in love with someone, he will have desires for the other person. If he stops touching you, avoids you in every possible way, or even dislikes you, then it is obvious that he does not love you at all. 
I like a quote very much:
Love, with dignity;In the end, it is more decent.It's really a pity that a relationship can't end well. But love can't be forced, otherwise, it will only hurt both. You can't wake up someone who is pretending to be asleep, and you can't get someone back who doesn't love you. When love ends, the most decent thing to do is not to entangle or force, this is the last tenderness we give to the person we once loved.