It is one thing to have a photo wall somewhere in the house but I think it is disrespectful to have photos of anyone's ex in the bedroom. (Especially one where they are embracing and showing their obvious love for one another.)

We all have a past and some great memories from our ex's but that doesn't mean that our new partner has to be reminded of it too. Perhaps he could just put them in a photo album and save the wall for loving photos of you as a couple.