A single girl or boy tends to want to seduce when he or she meets someone he or she likes, especially physically. In order to prove to himself or herself that he or she is still capable of being attractive.
Love is ephemeral, friendship is much more solid. Laughter is uninhibited, boredom, thoughts and perception. All this is no longer approached in the same way. In a girl-boy friendship, there is less judgment and less competition than in a couple. Friendship, when it is sincere, is not harmful. You can open up more easily and freely about your weaknesses, your fears, your doubts. In a love relationship, it is important to keep a part of mystery in order to preserve the desire of seduction which stimulates the other. In a friendship, all that doesn't exist anymore.