showing idealism; believing in, based on, the idea that perfect standards are possible (and so often impractical)

visionary

full of, showing, deep feeling

excited, vehement

not sensible because not doing well or achieving that which is intended

unrealistic

generous, unselfish, imaginative, in a way that disregards one's own welfare

idealistic

having, producing, feelings or ideas about love, adventure and excitement; a person with strong feelings and ideas about love and happiness

sentimental, idealistic

existing only in the imagination and unlikely to happen; (of a person) having grand (and often impossible)

idealized, romantic