This seems like common sense to me, but it never hurts for some people to have a reminder.
You can’t force someone to love you if said person does not want to reciprocate. Once you know that, any step in that direction is not love but rather lust, and in other cases possibly rape. Neither of these is good, friends. It doesn’t matter if society at large is alright with it. As much as you may want to, more often than not following your feelings doesn’t lead you to that good place you originally thought you were going to.