The emotion of attraction is the precursor to the emotion of love. The emotion of attraction gets you to sex. The emotion of love gets you to relationship.
Healthy women, beta females, will experience the emotion of love after sex even for the first time with a male. Alpha females, on the other hand, do not experience the emotion of love even after sex. That is why you keep it merely transactional with alpha females and pursue relationship with beta females (calibration).