I think he feels guilt that he wasn't a strong enough person to be there for you when you were sick. In his own depressive state he couldn't handle his sunshine going behind the moon, so he dashed away. Started up with Helen as he thought it would make him feel better I suppose(see not leaving you for her) and found that the pain was still there.
Now you are out from your eclipse and he sees you feeling pretty good and shining like the star you are. He wants you back and feels bad that he wasn't/isn't able to deal with the dark days.
Just a guess but seems to fit the situation.
kat
Me-53(and learning!) S24, S21, D18, D17 Just keep swimming, Just keep swimming. Dory