As I've said on the previous page, non-alcoholics can attend 'open' AA meetings which are convened on certain dates only after consent has been obtained from those members who don't want to get up and 'fess all in front of the likes of the Blanches of this world those who haven't personally experienced the highs lows of being addicted to the demon drink.
This twunt is no more an alcoholic than I am necks peroni and the fact that he was drinking lemonade at Sunday lunch shows that he either had a skinful the night before, or he paid special attention to the Method acting class he took at St. Twuntbert's Academy - 'be' the character, select props accordingly, and take up position centre stage to keep the audience's attention on the star of the show.
Far from being a not-so-secret lemonade drinker, I'll bet the allegedly impoverished bellend was on the booze Sunday night and last night, and that very soon the ow will be back in the pub with him.
As for his sudden abhorrence of the ow, I suspect that's not a lot difference to the sudden abhorrence he felt for you when he took up with his new amour - not that that stopped him from shagging you while his head was filled with lustful fantasies of her.
Of course, everything he's said to you about her is simply a variation on the theme of what he told her about you which appeared to have so incurred her wrath that, while cosied up to him in her white carpeted house and with his complete approval, she berated you by text.
Roxy has said she understands the desperate yearning you have to open your arms to this man. I would suggest you open your legs arms to a new man who doesn't have isn't a pox-ridden prick, or grow some balls of your own, turn off the waterworks, and stop giving this fucker room in your head.
Once you cut out all thoughts of this deceitful, lying, lowdown, piece of dead wood, you'll see that you have the opportunity to grow big oaks from little acorns create an immensely more satisfying and fulfilling future than you could have ever had with him.