Absent father returns after being absent for 18 years, expecting me to welcome him with open arms?

I told him I forgive him, but I can't trust him and just welcome him with open arms. I need to know why he left and what his intentions are since he's all of a sudden returning now. What's the motive?

He got mad and said that I don't forgive him and that I need to ask God to help me. And said he's not dealing with me ever again then hung up.
Absent father returns after being absent for 18 years, expecting me to welcome him with open arms?
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