The Sun reports that Amanda and her partner writer Hilary Bonner, 65, have announced their engagement and joked they risked "cutting it a bit fine" if they waited any longer to tie the knot.
Amanda says: "As our combined ages will be 144 at the time of this cosmic event, we felt we might be cutting it a bit fine if we left it much longer. In any case, our dog was feeling insecure."
They plan to have their big day at the Theatre Royal in London.
Amanda will be back on TV, reunited with former Corrie co-star Sherrie Hewson in ITV sitcom Benidorm next year.
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