Lo'ak would call you:
baby, baby girl, sweetheart, and (ma) yawne.
You would call him:
babe/baby, Lo, pretty boy, sweet boy, (ma) yawntu/yawne, and ma Lo'ak.
And as much as he loves hearing your voice and having you talk to him, they get him flustered. He loves being called yours, but gets bashful.
You make him nervous, and he has no problem with that.