My father is a complete waster, he's been absent from my life for more than 30 years. My parents were never married and he left home when my DBro and I were pre school, there was limited contact thereafter but we've not seen him since I was 8.
He has a history of drug and alcohol abuse and had a history of domestic violence towards my DM. To avoid the difficulties of discussing this with my two DCs it's become the accepted truth that he died when I was young.
He's now trying to make contact again via an old friend he's still in touch with and I don't know what to do, especially since the old friend knows where we live and could pass on my address.
I'd be more than happy for him just vanish again but I'm waiting for the time when it all comes to a head and my kids find out I we've lied to them all these years.