By Susan Knox & Zara Woodcock Ioan Gruffudd has announced his engagement to girlfriend Bianca Wallace – two years after his bitter split from ex-wife Alice Evans. The duo shared the sweet snap of their engagement on social media. The two beamed with joy as Bianca showed off her engagement ring to the camera. “The most precious thing happened…” Bianca and Ioan captioned the post shared on both of their Instagram pages. Fans and friends rushed to the comment section to congratulate the two on the happy news. One of Bianca’s family members said: “We have a wedding to plan. yayayay so happy for my…