It's so sad to see him forcing himself to stay with his boyfriend for good time's sake just because he thinks he's going to die soon. He's so in love with the guy that confessed to him crying in the past that, no matter what he's doing now, he wants to spend his last moments with him.
Hope he ends up with the doc. Just to be able to feel real happiness and real love again.
We really need more explanations in this one.