neglected
A	adjective
	1	neglected, unattended
				lacking a caretaker; "a neglected child"; "many casualties were lying unattended"
	2	ignored, neglected, unheeded
				disregarded; "his cries were unheeded"; "Shaw's neglected one-act comedy, `A Village Wooing'"; "her ignored advice"

high-maintenance (comparative more high-maintenance, superlative most high-maintenance)

1. Describes a system which requires a high degree of maintenance to ensure proper functioning and without which it is likely to break down.
2. (figuratively, of a person) Who requires a lot of attention.

   He has this incredibly high-maintenance girlfriend; if he doesn't tell her that he loves her every five minutes, she tends to break down into hysterical depressive weepy fits.