According to Star magazine, Heard felt pressurised to accept Depp’s proposal and marriage with him was never on the cards, said a statement.
“She cares about Johnny, but she is a free spirit who never envisioned herself marrying anyone,” said a source.
“Amber is very insecure about the prospect of marriage, wondering if it is the right decision and as Johnny pressures her to set a date, those feelings are almost too much for her to handle,” added the source.
Depp reportedly is keen on settling down after the release of his sci-fi project “Transcendence” in April.
The movie releases in India April 18.