Despite the pair not having been together for a few years, they have remained close and been successful co-parents to Janet and William.
Billy was also amongst the first to spot Honey had an eating disorder and wanted to make sure she was okay.
He said he would support her through anything and the pair clearly have feelings beneath the surface which will be sure to be addressed on her return – could Honey profess her love for Billy?
Could this – along with Billy’s possible failed romance with Karen – be a sign they will rekindle their romance when arrives back on the Square?
EastEnders returns later this year to BBC One.