I agree, maybe "LI" is the wrong term and "false LI" explains what I mean better. What I imagine is a likable female character with a developed storyline that spans many episodes and includes many interactions with MCs. The character grabs the attention and makes the player like her and invest in a relationship with this character. But in the end, all efforts are in vain, this character just leaves MC off, no matter how good their relationship may seem. You know, like breaking up with Bella, only this breakup would be real, and she would quickly find a new guy.
On the other hand, to hell with it. It's a game after all, and if MC is some kind of a strange ladies attractor, so be it