All of us can get clingy occasionally such as when we’re sick or hurting in some way. However, chronic clinginess is generally a sign of an attachment disorder. What it means is that the individual lacks the ability to soothe him or herself or feel OK in the world unless they have someone they can sort of go through life “in tandem” with. Often, individuals who are in relationships with people like this will start off by trying to reassure the person — give in to their intense needs for closeness and reassurance. However, that approach never works in the long run because the problem lies within the one who’s clingy — it’s not something their partner can fix for them. A combination of individual therapy for him and couple’s therapy for both of you may help.