Your questions here always have this tone like you're trying to get the right answer about whether or not some fictional characters are romantically attracted to each other.
This makes having these conversations very frustrating, because on the surface you appear to be asking about questions about the Japanese language, but what you really want to know is tell me if this Japanese expression means, 100%, without question, whether or not these characters are in love.
These questions cannot be answered definitively, because they are open to interpretation, just like in real life, where it is not possible to know 100% just from the words someone uses or their actions whether or not they are attracted to someone else.
To specifically answer your question, no, a metaphor or simile does not imply that the thing in question is exactly what it's being compared to. If I say "He was so eager to play his new video game, he ran home like he was Usain Bolt" it doesn't mean that the person in question is actually the fastest man in the world. Like Chris said, if you said "Senator A gushed about Chairperson B like a girl with a crush", it doesn't mean that Senator A literally has a crush, or is even necessarily a girl.
But again, you need to stop thinking that these questions of yours have one right answer, or are even about the Japanese language at all.