Well done on getting through your first day
Sounds like you're off to a great start - and as you know, the first few days are always the worst. I'm nearly 4 weeks in now, and I can't believe how quickly the time is flying!
I'm doing Exante with my boyfriend at the moment. Neither of us had tried a VLCD and he hadn't even tried to diet as such before, so it was in at the deep end for us both!
It definitely helps to do this with the support of another person though - I think I would've cracked before now if he was still eating normal food in front of me, and it helps that neither of us need to keep any food in the house.
Healthy competition also definitely helps, but there's also the feeling of not wanting to let the other person down. I know my fella wouldn't dissaprove if I had a slip-up (he isn't like that), but I wouldn't want to weaken, and cause him to slip as well, if that makes any sense?
Anyway, enough of me and my ramblings. I just wanted to wish you both luck with the rest of your first week