Pair confirm reunion on social networking site
The pair changed their profiles from single to ‘in a relationship’.
The reunion comes days after Lily, 23, and Chemical Brothers star Ed, 37, were spotted shopping for kitchen utensils.
They were also inseparable at Glastonbury festival last weekend, when Lily found out her Nana had died.
‘Ed was there for Lily when she really needed him and that has brought them closer together,’ a source tells The Sun.
‘They have decided to give it another go.’
The couple split earlier this year – just weeks after she suffered a miscarriage.
Meanwhile, Lily has ditched her pink hair in favour of a brunette look.