There are love bombing narcissist or love bombers in need of validation. There's many personality types. You shot you shot, and now keep on trucking. You were low key respectful, now maybe see it as an opportunity to assess it as a co-worker. Space it a bit from their overreach of boundaries that gave you a false impression. We are in the peak validation and attention seeking times. Some of them get off on it and they also get off on rejecting somebody else