Can you go with Love path but also having the sharing scenes ? (or most of them are in Sub ?)
depends on what you want from the love path.
technically the game is divided into "love"
or "sub" path, meaning that some scenes and choices are limited to your playthrough. such are the sharing scenes, which are solely in the "sub" path.
if however you see a "love" path as a route where you love Emilie, get her pregnant and marry her, then that is still possible. you still can build your harem and even those other girls you can share, can be part of your harem. though this will lock you into a specific ending bracket you might not like:
you will be forced to make the tower into a sex club, featuring Emilie and every girl you shared, as prostitutes working there. but even prostitute Emilie can be married and get pregnant