I'm really worried about my DP's behavior regarding an ex girlfriend. When we first met he told me she was a close friend. Yet, I wasn't allowed to meet her and he wouldn't answer the phone when she called or reply to her texts when I was with him.
Later, he admitted that he had slept with her as a "friend with benefits" on a regular basis for a couple of months. Then he referred to her, in conversation, as an ex girlfriend.
They call each other by pet names. They meet up regularly and he lies about seeing her. I've seen them out together and when I approached them, she saw me coming and ran off. More than once she has been in DP's house and he has denied that she was ever there. Yet when we argued about it, he finally admits it by saying "How do you know?".
I have attempted different ways to make things better, over two years, by asking for the three of us to meet up for a drink, which he has always refused; I've asked him to be honest when he meets her and he continues to lie; I've demanded that he stops seeing her, which he has agreed to then "changes his mind" and is back in touch with her.
I have always, explained that I am concerned about their relationship but he calls me paranoid and controlling. Is he right?