A quick review, of sorts. I'm of the opinion that the dialogue is extremely well written and thought out. The options presented appear realistic (which path, with consequences down the road, to choose). One can't wait, but has to, for the next chapter.
We're not privy to the backstory on Bella, so we don't know if she's a keeper or not.
Monica would most definitely be appreciative of MC's attention, and would respond in kind.
Katie's got too many self-dense mechanisms in play to allow a serious, meaningful relationship without a lot of work. Less of a keeper than Monica, but more than Bella.
Jenna? Adorable, cute, loving, caring. For a long-lasting relationship, she'd be the one to keep.
But, that's just my opinion.