Alec Hardy is your partner and has always been very, shall we say, alexithymic when it comes to love.
Since he divorced his wife, never had a partner again, and now you're here, he doesn't know how to act. And also his head was torturing him, because of past and present problems that his head would not leave him alone. He always had a voice in his head.
He knows what kind of person he is, very grumpy and distant with people, that's why he doesn't understand that you are with him, for him you are perfect and he thinks he would only be a burden for you.
You didn't know any of that. Obviously you were worried about him, as he was often very tired, but you never thought he was that bad.
And that's why you were so surprised when one day, when he came home from work, he hugged you and hid his face in your neck. You could tell he was quite sad.