The only thing that comes close matching Belldandy's love for Keiichi is her faith in his fidelity. She states this several times, but nowhere was her faith more sorely tested than during Shiho Sakikabara's debut in Chapter 57 (Fallen Angel). This chapter provides a sobering reminder that Belldandy, even with all her character strengths, is not perfect. She experiences emotions any normal person would have such as anger and jealousy. The fact that she reins in such emotions much more tightly than anyone else doesn't mean that they don't exist.

   It is of interest to note that jealousy seems to be main flaw that Belldandy was given, as it appears in both the manga and Movie. Bell's jealously manifests in the shattering of objects, the so-called "jealousy storms." It is not deliberate but instead results from jealously weakening Bell's seal on her power.

In the case of anger, Belldandy has shown it only on the rarest of occasions. Bell has an enormous amount of tolerance and patience but even this can be stretched thin. A good example is Urd's meddling in Chapter 47 (Lunchbox of Love) where she puts one of her love pills in Sora Hasegawa's lunchbox.

   Most people tend to agree that Belldandy is naive, to one extent or another. One reason is that she seems so innocent to the ways of the world. Take in case the panels on the bottom left (Chapter 60: Devil in Miss Urd arc) but compare it with the next one (Chapter 68: Fourth Goddess arc). Belldandy really isn't that clueless about "worldy matters" as most people tend to think. Another, more subtle reason is the way she views things. Here's a few lines of dialogue from Chapter 44 (Queen of Vengeance):

Urd: It's so dumb -- if you used your powers, you could be  done   in a couple a' minutes
Belldandy: Knitting is more than just making something. You   don't exactly need to be thinking of some special person.   Just...   the joys of the day, the moments of sadness... and if  thoughts of   that special person are in there too, then...your  knitting will   overflow with love and warmth...understand?
Urd: It's beyond me, sis, that world you live in. But still... that   sweater looks plenty warm

   For Belldandy, the simplest of things always have something deeper. She retains what most people have lost as they grew up, that is, the way of looking at the most mundane of things with a sense of wonder. However, probably the greatest reason for calling Bell naive is her amazing, almost child-like faith in the goodness or kindness of people. Belldandy seems to trust people so openly, yet it would be a mistake to say she does so blindly. In fact, she has demonstrated several times a strong sense in perceiving a person's   character, like when she sensed insincerity in Hikari (Chapter 53, Ninja Master arc). Belldandy decided to trust Hikari then, acknowledging the responsibility for her choice:

Belldandy: I want to believe that everyone has a dark side and a side of light...I   want to believe in the light
Urd: I know How you feel Belldandy, your gentle soul...but tell me if Keiichi gets hurt   of it, what then ?!
Belldandy: If..If it comes to that, then I'll protect him...with my life!