I am sure that some of them already regret it or at least remember the time they spent with me as happy moments in their lives.
There is no reason in punishing other people because they rejected me or they had better alternatives. It would be equivalent to force people to love you even if they don’t want to.
Obviously it is possible, since human psyche is hackable, but it takes away the pleasure of knowing that “she loves me of her own will”.
There is also no reason to care about people that don’t care about you. In many ways pure and real love is dead or never existed.

