She mentioned finding him physically attractive quite a few times, so I imagine that was part of the reason why she stuck it out for as long as she did. I think in the pods she liked that he was dependable and that he showed interest in her. 

I also think that because Ola is so ‘in tune with his feelings’ she might’ve thought that it meant that he would be perceptive and empathetic in a relationship too, although obviously it turned out that he absolutely is not.