I don't think you do need to, really. I quite liked not being able to be contacted while I was at work/with friends/doing stuff with the children/on another date 
If anyone asked for my number and I felt it was too soon, I just said I didn't like to give out my number before I'd got to know someone. It did mean a few people didn't get in touch again, but I took that to mean I'd weeded out someone I wouldn't have been interested in anyway.
Oh and no, I'm never sick of conflicting dieting advice 
I lost a couple of stone a few years ago following 5:2. I gave up on the WOE, but the weight stayed off. I don't really eat much processed stuff generally really, but I have been eating more food in general recently. Because he's such a good cook... In 5 months I've not cooked for him once. He cooks for me (from scratch) every time I see him.
Anway, I think I need to do a bit of ADF just to clear out a few toxins and lose a few pounds.