Hoarding has been recognized as a frequent sub-component of obsessive-compulsive disorder that can occur at lesser frequency in a primary form. The theoretical and empirical literature on hoarding is still in its infancy. The current paper attempts to expand and refine CBT theory via the identification of the specific cognitive distortion of object-affect fusion (OAF) relating to problematic emotional attachment to objects. The concept of OAF is defined and then related to sentimental saving. Two case examples are detailed in which OAF represented the main focus of the CBT intervention. The case examples illustrate how OAF recognition can be integrated into and supplement existing CBT approaches to hoarding. Future theoretical and empirical developmental tasks in relation to OAF are identified and discussed.