A reference to the character Sidon in The Legend of Zelda: Breath of the Wild. He says things like "You can do it! Stay strong!" to Link (hence 'supportive'). He is the prince of the Zora race, who are designed after sharks (hence 'shark'). Due to his admiration for Link, many in the BotW community have taken to shipping the two characters (hence he is Link's/the player's 'boyfriend').
church hurt is where you experience a degree of distance, pain, or judgement from your church community. Essentially, you are just unable to “find your place”. This is prevalent in the Christian community, but can be extended to other religions.
Now that I am an adult I am beginning to heal from the church hurt that was inflicted on me as a child.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.