As a man who grew up attracted to both girls and boys, I disagree. I don’t see the movie as putting a label on anyone. It doesn’t, for instance, claim that he’s not going to fall in love with a girl the next day, or the next week – it just depicts him falling in love with a boy today. I have concerns about this type of thing being normalized, like you do, but my predominant experience of watching the film was, “Awwww, that’s what it was like to be me.”
The Christian message is not that the boy’s feelings for the other boy are terrible or perverse or anything like that. The Christian message is that it’s not good for either boy if the relationship attempts to mimic a marriage relationship, or if the relationship involves sex.
Here’s what I would love to see: a video exactly like that one, except that the two boys try to have their hearts merge, only to find that it makes them confused and unhappy. Then they give each other a hug and try to find a new framework for their friendship. The film ends with them playing catch, or flying a kite together, or something – having found that romance will take them nowhere, but friendship will take them wonderful places.
Catholic movie producers, make it happen!!!