Love Bombing is not a new concept it seems. The expression was coined by members of the controversial Unification Church of the United States in America in the 1970s. The phrase then started to be used in psychology when discussing how cults use persuasive and coercive techniques to recruit new members.
Love bombing is a coordinated effort, usually, under the direction of leadership, that involves long-term members' flooding recruits and newer members with flattery, verbal seduction, affectionate but usually nonsexual touching, and lots of attention to their every remark. Love bombing - or the offer of instant companionship - is a deceptive ploy accounting for many successful recruitment drives.
Think of the seemingly perfect guy (or girl) as a cult, he really wants you to become a fully paid-up member and, until you do, he’ll say or do anything to get you onboard. Once you are, however, he’s likely to turn his attentions elsewhere and this really should set alarm bells ringing.
Love Bombing is a manipulative strategy to make individuals more emotionally pliable.
The individuals engaged in love bombing are more likely to be egomaniacs and/or narcissists who like to feel dominant and powerful and/or love psychologically humiliating others. If someone you barely know is lavishing you with excessive attention and affection then, sadly, the odds are that sadly it’s because they want to manipulate you and you’re unlikely to be the only one. By constantly flattering and communicating with you, you cannot focus on anything else which is where the control comes in.
At its most serious this can be the foundation for a problematic and abusive relationship.
The thing about love bombing is that it doesn’t last forever.
Once the toxic person has taken what they need from you, they’ll pull the rug out from under you. A person who was affectionate and attentive suddenly becomes scornful and controlling. Experts call this shift the “devaluation phase.”
They seem to be doing all the giving until you realize you’re doing all the giving and they have used you for your body, your wallet, your home, your caretaking ability and your empathy. This can lead to a vicious cycle that includes a period of idealization followed by a period of devaluation, again and again. During the periods of devaluation, the victim may try desperately to get back in the love bomber’s good graces.
Another good read: https://graziadaily.co.uk/life/real-life/love-bombing/
And again: Huffington Post