Go back to 2018 and look at her valentines post. Same gown. She's a game player. Why wear what she wore for Nathan. None of this is to show she's happy single. She's either playing games with Nathan by putting that photo up where he will recognise what she is wearing or hes with her there today and shes worn it on purpose for him. He's on her mind with the way she has mentioned her ex a few times, she's not over him, her face looks like shes been under him all day to be honest. They might just be seeing each other again, which would make her single if they're not technically back together plus this is kaytee who always pretends shes single when she isn't, shes talked about having time to look after herself for once and give herself love, that doesnt mean they haven't got back together, she might just be thankful for that period apart. You have to read between the lines with her because it's never the full picture.
J isn't there either, I hope Jules covers his eyes if hes dropping him back tonight and she opens the door like that. Most weekends J doesnt seem to be in her stories anymore, shes getting 60 hours a week of keiras, school time and sending him off somewhere for the weekend. Living the life isn't she!
If she is single, alone and has spent the day like that, I dont think it will get a reaction out of her ex, if hes still with that new woman they are probably having a laugh at her expense for trying to make out she is so happy when if that was the case she wouldn't have mentioned her ex once let alone show the roses he sent her before. I wouldn't dream of posting pics of previous valentines and the presents I got off ex's back then. That's just weird and desperate AF.