It is a cold evening and the fire is raging. We can only assume that George and Lynne have gone to a fireworks evening. Who holds a fireworks evening at this time of year? The people of Wimbledon must have been celebrating the end of February for some reason. This must 1984 and the council were hoping for a lot of women to be proposing to their boyfriends but it's more likely the celebration was to mark the 50th anniversary of the Reichstag fire.
Both George and Lynne are wearing scarves to protect themselves from the cold but this woman is only wearing a top and relatively thin jacket. To add to that she hasn't even done her coat up. She must have been standing very near the fire recently to be that warm. It is likely that her and her husband have had an argument about how best to keep warm. She insisted that standing near the fire was best whereas he thought a hot drink would be better. This may have been a ruse however.
This man has some nerve. He is openly kissing a woman who isn't his wife in a public place. Has he been having an affair with this woman or is this romantic clinch purely based on a mutual love of hot alcohol? Granted, this new woman is far more attractive than his wife but that is no reason to kiss her. Does he do this a lot? Is it socially acceptable to kiss another woman as long as she is more attractive than your wife? What we don't know is that the husband and wife may have a pact that they are each allowed to kiss one other person during their marriage. The husband has taken this opportunity to do it now. Watch out George, that lady could be making a lunge for you any second.