"Can’t wait to be cancer-free and see you all at a concert in the hopefully near future. Love to you all,” Hoppus wrote.
Fans had also spotted the ring on her finger when she performed on The Tonight Show during her Monday performance.
“My heart is broken and I don’t think I'll ever fully recover from his loss" said his son Wolfgang.
How is Megadeth Guitarist Dave Mustaine's throat cancer treatment undergoing?