Je vais dans mean I'm going in.
I am in
Je danse* I dance Je dans means 'I in' which makes no sense
i in french
"I am in a..." It's not a complete sentence.
In the heart i hope so
I walk in to my friend
In ten years i am going to
tu est dans mes reves
Je danse dans ma tête was created in 1992.
Je suis dans la classe means 'I am in the classroom'.
I'm in love with only you.Although I think the grammar is incorrect.
I'm sunbathing in the garden. (Bronzer means 'to get a tan')