On the topic of getting Chris a LI, I thought I'd share my thoughts on it.
When writing a story, every writer has a set of limitations of what he can and can't write about. With a community like this, there will always be a huge difference of opinion of where to draw the line.
The Adult Visual Novel/Game community is a rather spoiled one. You can see it in most game threads with questions like 'is there a Harem ending', 'I don't want my best pal to get any girl, even if I don't like the girl myself', and so forth. Downloading a new VN is like opening a box of candy, saying: I want them all to myself.
And before I get a lot of hate for stating the above, let me continue with this: I get it! I used to mod Skyrim into having so many girls I could hardly remember all their names. It's part of the charm of Adult VN's/games. After all, with these games, it's possible to avoid real life limitations and normality, such as monogamy, boob and dick sizes, age restrictions, and family interactions, etc.
I'm not stating all of the above to shame anyone. In fact, most writers will do their utmost to include as many kinks as possible, to please the majority of players.
But now to the main point of this little rant. By stating 'I don't want Chris to be even remotely close to any of the girls', you remove a tool for me to write a better story. In my opinion, that is why most sidekicks are rather uninteresting and bland. The writer knows that all the girls don't have personal space when it comes to the MC, and about a kilometer of personal space when it comes to the sidekick (unless you specifically want to explore the kinks of cuckold, NTR, and the likes).
The option to include Christine as a LI of Chris is not really viable, as the moment I would show her face, someone would want her for the MC instead - perfectly illustrated by Holly entering the story late, and ending up being someone favorite.
In the end, the only tool I'm left with is the option to give Chris a girl he can (if the player chooses to) romance (and by that I don't mean ever having to visually witness Chris sexually interacting with). It means a lot more renders, scripting, writing, and a delay in the release schedule. I still opt to do that, as I think that adding a girl to Chris's armpit in the late summer nights of Lexi's place will add to the story, opening for a better story for those who choose to do so.
Sorry if I have stepped on anybody's toes with this post, but in order to explain my opinion about it, I had to wall of the text a bit.
And to end this on a high; you can romance, and end up with Holly if that is your main goal. But the storyline of that route will be a whole lot shorter than the others.
Cheers