The four faces of dependency
Fear of abandonment, closely linked to anxious attachment, makes any distance feel like a threat. People-pleasing means always putting the other person's wishes first to secure their affection. Fusion makes your tastes, plans and friendships dissolve into your partner's.
Hypervigilance, finally, is the need to know where the other person is, who they talk to or what they're doing in order to calm your insecurity. All four share a root: feeling that your worth depends on the relationship.
How to start changing it
Reclaiming your own space, learning to tolerate uncertainty and working on self-esteem are key steps. Emotional dependency responds very well to therapy.