Love bombing can apply in individual, non-group settings too. If you ever come across a person who seems very into you right after meeting, giving gifts, going out of their way, etc. it's possibly love bombing. Once you're hooked they turn around and take what they actually came for.

LLMs feel a bit more culty in that they really do have infinite patience, in the same way a cult can organize to offer boundless attention to new recruits, whereas a single human has to use different strategies (gifts, etc)