The couple spoke about the impact of intrusion and intense speculation from fans, which Dan said "could have killed me".
He also explained it had taken time to discuss the relationship publicly because of the effects of his "extremely homophobic childhood", which meant he had been "deep in the closet" for years.
"In my mid 20s I felt we had to hide the relationship because I was still hiding who I was to my friends, family, myself," he said.
"This is why all of the digging from people online hit a nerve, because Phil was my safe space. You were my first boyfriend... You were a literal ray of light in my life back then."
