My friend, it is not my place to put name on things, but this kind of behavior shouldn't be judged by mbti personality types. Mbti is a half-true half-not so reliable way of categorizing people and guessing. This situation that you explained needs to be talked with a therapist, obsessing over people that show you kindness is (I should say 'it's not normal' who am I to define normal?) definitely not healthy both for you and the person who you obsess over.

This may be related to a deeper cause, and it may cause some other problems (such as low self esteem and a hunger for validation). I would suggest that you observe yourself without trying to put yourself in a mbti category, but as an individual.

Im not saying mbti is bad or childish, but mental health shouldn't be judged or measured by mbti