That's what I was wondering. Rey just gave him a big ol gay looking hug out of nowhere. Weird...
Speculation is that Dullindal is Rey's adopted father, or some sort of fatherly figure. Even so, it was surprising to see him react that way. Not 'gay' or anything, in my eyes, just surprising. They share similar looks in the first episode and a few others near the beginning, I believe.
That what I was getting the father figure or he was his real father. I did not see anything wrong with it.