If someone keeps saying "thank you" every time they receive something from you, it can indicate several things:
Gratitude and Politeness: The most obvious interpretation is that the person is genuinely grateful for what you are giving them or doing for them. They might be expressing their appreciation and showing good manners by saying "thank you" each time.
Acknowledgment of Effort: By repeating "thank you" multiple times, the person might be emphasizing that they recognize the effort you put into giving them something or helping them out.
Social Norms: In some cultures or social settings, it's common to repeat "thank you" as a way of showing extra appreciation or respect.
Reciprocity: The person might be acknowledging the favor you're doing for them and indicating their willingness to reciprocate or return the kindness in the future.
Nervousness or Awkwardness: In some cases, excessive use of "thank you" could be a sign of nervousness or social awkwardness. It might be their way of trying to be polite and not knowing how else to respond.
Overwhelmed by Gratitude: Occasionally, when someone is incredibly grateful for something, they might repeat "thank you" to convey the depth of their emotions and feelings of gratitude.
Habitual Response: Some people have a habit of saying "thank you" frequently, and it might not always carry significant meaning beyond a habitual response.
Overall, consistently saying "thank you" can be seen as a positive and appreciative behavior, but the specific reason behind it can vary from person to person and situation to situation. If you're unsure about the person's intentions, you can always ask them about it in a friendly and non-intrusive way.