None of us can! From how it looks right now, Sayn is still clinging on to the vague hope that Elli will dump Leech and stay with him. Despite as you say, all the calls and staying out overnight etc, he is SO IN LOVE with her, that he just wants to keep her, no matter how badly she makes him look - A Fool, a Gimp, a Cuck.
Elli on the other hand, knows full well that keeping Sayn for the time being helps her view count. Leech doesn't like the cameras, so she now has to go outside to see him. By keeping Sayn and fucking him every couple of days, she has him tightly on the leesh, and has Leech outside ready for her. She knows Sayn worships the ground she steps on, and is full exploiting it. Elli only loves one person - Herself.
All it takes is one man to say 'No, this has to stop' and then she is back to boring old square one. By having TWO men vying for her love, she can keep this going and going, as we see. One to keep her RLC time occupied, and one for her 'real' enjoyment. But you can guarantee, that if when she is left with just one of them, she will get bored soon.....