The fuller answer
Grooming is a pattern used to gain access, trust, secrecy, and control. It may begin with attention, help, gifts, praise, shared secrets, or making a young person feel unusually mature and understood.
The person may gradually isolate the target, test small boundaries, sexualize conversations, create debt or guilt, ask for secrecy, and then use pressure or threats. Grooming can come from an adult, older teen, peer, family member, coach, employer, romantic partner, or online contact.
Kind moments do not cancel manipulation. Noticing the pattern late, liking the attention, accepting gifts, replying, or having feelings for the person does not make the exploitation the young person’s fault.