Biting is generally something people associate with negative feelings, but cats are a little different. When your cat nibbles you playfully, she's really offering her affection. This is much different from a fearful or defensive bite that's meant to cause harm, and the feelings behind it are different as well.
Why does my cat bite me gently?
A cat may lightly bite you to communicate one of the following things: General affection, love and happiness; A desire for attention or petting; Over-stimulation, or over-excitement.
Why does my cat bite me then cuddle?
Cats cuddle and then bite due to petting-induced aggression. Anything from over-stimulation and static electricity to sensitive skin and poor socialization can end any cuddle session with bite marks on your body. Sometimes, cats bite as a sign of affection—also known as “love bites.”