I'd forgotten about this thread.

Ive since spOken with BDM about the situation and have been told that when I register bub, I need to include a stat dec and where bubs surname comes from (should we use DF's).

After a lot of discussion, bub will have my name. Once we get married then we will consider changing his/her surname, just like I'll change my own.

Just on a side note, whilst DF knows its not his child, he will raise bub as his own and be known as dad