"
It felt so sweet, it felt so strong
It made me feel like I belonged
And all the sadness inside me
Melted away like I was free
The speaker is trying to say that once she let happiness start to begin in herself, she felt strong, as we can tell from the lyrics "it felt so strong". Also, she is trying to state that all her sadness left her (the lyrics "And all the sadness inside me Melted away like I was free" explain this), and she was "free", meaning she broke away from the sadness.