Meanings of a kiss in different parts of the body?

My girlfriend and I always kiss whenever we see each other. I kiss her on the forehead sometimes when we are cuddling. She use to never do that. I know that guys do it if they really like the girl. She starts doing it now to me to. I never had any other previous ex that did that. Do you girls kiss your boyfriend on the forehead?
Meanings of a kiss in different parts of the body?
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