This is a place to share our nice, sweet, and fun experiences with our students.
Some students are sweet only to manipulate and get what they want.
I agree that most kids are genuinely good, and I enjoy interacting with them. One cannot worry about the alterior motives of students. I love teaching in the classroom and while some students like to think they are manipulating you, you can use those moments to get those students to think for themselves and develop their own answers. Generally from experience the students who do come for help usually are the ones who are sincere and do need that extra little push or attention.