For me, there are only two possible scenarios: 1, Gillian is in a relationship with Peter. Since she started to promote his show on September 30, she most likely already was in August. So David knew. And it didn’t seem like they just separated. Even last weekend David talked about her willingly. Therefore, him and Gillian in a relationship was just an illusion. 2, There is no such thing as a relationship between Gillian and Peter. I guess I just don’t want David to hurt