What constellation left insecure lover (FIG.)

Wen/lucky papercranes - blog each pair of lovers in communication, is hoping to keep each other's freedom and space, because so get along together wouldn't have oppressive feeling. Some people, however, cannot leave the lover side for long time, because the lover occupies a very important part of their life, as long as the lover left them too long, they will produce great emptiness and insecure. What kind of constellation leave lover will have this reaction...