Sienna Miller and Tom Sturridge are reportedly engaged and are expecting their first child in June.
The 30-year-old actress and Tom, 26 - who are expecting their first child together in June - are also set to tie the knot after he proposed during a romantic trip to Paris, France after Christmas.
A source told Life & Style: "They're engaged and really happy. Her family is happy, as they absolutely adore Tom.
"He proposed to Sienna during their romantic trip to Paris after Christmas. He filled their hotel suite at the Ritz with flowers and presented her with a vintage Victorian ring. It was incredibly romantic - she was blown away.
Sienna - who has previously had a rocky relationship with Jude Law and reportedly enjoyed a fling with Daniel Craig - is said to be thrilled to have finally settled down with Tom.
The insider said: "She finally found the love of her life in Tom and couldn't be happier. She trusts Tom and is herself with him.
"There's no drama between them - they're made for each other.
"She can't wait to be a mother. The couple are over the moon with the news of the pregnancy."
Friends of Sienna have given actor Tom the seal of approval and are delighted for the couple and "not surprised by the news of the pregnancy".
A source said: "Her friends are really happy with her relationship with Tom. He's younger, yes, but he's mature and he's a good guy - They're really good together."
Sienna started dating Tom - who is friends with Robert Pattinson - just a few months after she split from fiance Jude for a second time in February 2011.