The meaning is cose to what was mentioned, but there is so much more to it. Miku is indeed confused about lover. Her boyfriend is lustful and wants endless sex, but leaves her when finding out she is pregnant. Miku sings the lyrics "Bye Bye Baby" Which points towards abortion, as she did not want to raise the child alone. After that Miku let herself go, letting the lines between love and lust blur even more as she began sleeping with multiple men.