hc : at some point all the marauders had a crush on james. james included.

sirius bc he was the symbol of his freedom and rebellion, who was everything he dreamt to be ( loving family, happy, … )
remus bc he was the tolerant and loving person who accepted everyone and just didn’t care if you were different ( that was in first year, before they discovered his secret and he was just imagining their hypotetical reactions )
and peter bc james included him in the cool band and made him feel special