Because to me it reads like the dev might be setting her up for something more... like with the secretary, the chick from the club and the ladyboss... I have no "evidence" tho, but like, there's usually a reason for things. Now, sure, maybe nothing will come out of any of it, but there's no real reason to think that the only LIs are Alice, Elsa and Lucy...Not sure why you would think that, drawn out exposition seems to be the real name of the game here not new interesting love interests.
Hell, it's entirely possible Elsa will never be a LI and Alice will never be attainable ¯\_(ツ)_/¯
Plus I'm sure the ex will reappear at some point too.