Biodad...?

I know its been a long time since i've ben on here but I could really use some help...I found my biofamily a while ago and the only one im really close to is my sister and her family. well...my biodad and I were talking every day almost until he went to prison. it ht me really hard. which is why I haven't been on in a while. he got out yesterday and told my sister to tell me to call him. im nervous. im not sure if I want to open that door again. I am not sure what I should do....any advice for me would be really really great right now. sorry this is kinda long and confusing!! britt:confused: