How are you doing? We haven't met since forever and I'm very sorry for that. They rarely let me use the phone in prison. And even when they do, I realize... I don't really remember your phone number. So that's why I decided to write you a letter instead. So yeah, I don't think I'll see a reply in a couple of months.
Hey, why don't you come and visit? I see your aunt quite often, but I'd really like to meet my... child. I'm sorry, I don't really know how to adress you right now, but you know you have my support in whatever you're into! Listen, just send me a reply with your phone number... If you want to, that is. But talking over the phone would be a lot faster than this old pen and paper!
By the way, how are you doing? How's college? Wow, I'd really wanna see you in person. Please visit me more often, I'm super lonely here.