So from what little reading i did in this thread, I have to choose a girl and stick with her for the playthrough?
1 girl per playthrough?
If yes then which girls should one go for? Which one has the most content? I intend to start my first playthrough and see how it goes. Want to know if i actually like this before starting idk how many playthroughs for each girl
Pretty much, there are sidefucks and such (some of them with consequences), but other than that yeah. Ellie, Steph, and Vanessa are the ones with most content for now. You can also have solo runs with Jenna and Lydia, but their content is more limited currently.
Note that you won't always know the consequences of your choices as you make them. Accepting a date with one character may block you from bumping into another. If you're fine with that, playing through and making your own choices is certainly the more organic experience; if not, the walkthrough is your friend.