Clare has a new long term boyfriend Toby Higgins who is a muscial driector. She lives with him, her sister Julie and her husband.
I doubt she'd go back to Dec now as part of the reason they broke up was Dec's career meaning that they hardly had time together when Clare was also working, especially when touring in theatre.
And she shagged Darren Day which Dec found a bit off putting.
Not a rumour, fact, from their autobiography...