I cannot find any reliable information suggesting that Dua Lipa is engaged to or has received a marriage proposal from Callum Turner. There are no credible news reports, statements from representatives, or social media posts confirming such an event. It's possible this information is a rumor or misinformation spread online.
To avoid spreading false information, it's crucial to verify information from reliable sources before sharing it. If you encounter such information again, check reputable news outlets and official sources before believing it.