Your Partner has been creating emotional distance between you. He has been lying and minimizing about his Ex while keeping up an inappropriate level of contact with her. He dismisses your feelings and deflects the blame to you.
In your September thread, you wrote that he had recently met up with his Ex more than a few times. He had plans to meet her again that Saturday and then go for the aforementioned ‘walk,’ which you later discovered to be a lie. Why was his lying not a dealbreaker?
In your January thread, you said he had been distant since Christmas. He had been acting weird for several days and this culminated in an argument. He was very disrespectful, and you feared he would break up with you on your upcoming 2nd Anniversary trip. In addition to his contemptuous behavior that night, all the next day he would barely look at you, froze you out, and repeatedly went into the bedroom while on his phone. You assumed that he was talking to his Ex, and indeed when he later got on WhatsApp near you, you saw that her name was at the top of his list.
Although you ended up canceling the trip because of his disrespect, you did give him his gifts and the card you had collaged with fun photos of you two. He gave you nothing.
I wonder if he treated you with contempt hoping you would cancel the trip.
Now he is secretly planning to meet up with his Ex again, lying by omission, and telling you to sort your insecurity. Honestly, you deserve better than this untrustworthy, manipulative man who is rebuilding intimacy with another woman and making a fool of you.