Fear of abandonment

Fear of abandonment can come from childhood loss or neglect as a child, especially if it is more emotional.

Brain development is the process of creating, strengthening, and discarding connections among the neurons. The growth of each region of the brain depends largely on receiving stimulation. By not attending to that stimulation, your body can't function properly.

The remedy to fear of abandonment in your relationship is to work on exercising that "attachment muscle," allowing yourself to become more vulnerable and open with your partner.