Communication is 90% of any relationship. Talk to them, trying to use signals is not a good idea as signals often times get misinterpreted. It's better to come out and say it, that way they know where they stand. If he likes you, it's a good time to setup that boundary, if you don't, like turns to infatuation and so on which makes it difficult to go back.
Chat with our AI personalities
A girl who only wants to be friends may emphasize group hangouts, talk about other potential romantic interests, or keep physical contact platonic. She may also exhibit a lack of romantic interest in conversations or interactions.