Caroline was clueless about Darren’s feelings for her.
There was no need for her to know unless she revealed that she had fallen in love with him first. Only then would he expose a trickle of his love to show her that he felt the same.
The education Darren had received since he was young had made him unable to express his feelings. Therefore, he simply cared for Caroline secretly.
If she were to marry another man, he would sincerely wish for her happiness and remain by her side as a compet