I'm not sure I really understood the last few panels on this one. The part where the one girl says "Because I might fall in love again...some day" and also the part where it gets reinterpreted as "Because I might fall in love again someday, baby."
The first line sounds like she got burned in a previous relationship and hasn't really recovered from it yet, but there wasn't any sign of that in the story. Alternatively, it could mean that if she gets into a relation ship, with the blonde girl, she might later fall in love with someone else, but the someday and the ellipse seems to throw that off.
As for the second line, the only thing I can think of is that it's emphasizing that she thinks of the blond more like a baby, but that doesn't seem to fit the tone of the thought or their relationship. That interpretation seems really mean spirited and harsh, but it's positioning feels more like a term of endearment.
Maybe she's trying to say that a friends-with-benefits type of relationship would be pointless because she'll fall in love again. The ellipses show how unsure she is, like, "There's always a possibility of me falling in love again. There's also a possibility of not falling in love again. Who knows..." She (black haired girl) seems like the type that's serious about relationships and so she sees no point in entering a relationship when she feels nothing for the blonde girl. Her point about falling in love again just solidifies to the blond girl even more about why it would be pointless.
As for the second time that line was said, I think it's strange. It doesn't really fit. I feel like it would've been better and clearer if that was omitted. Unless, of course, I'm missing something.
Anyways, I found this interesting. I like how it didn't really focus on how they were both women. How the black haired one reached the conclusion that some people, no matter what gender, just aren't people you are romantically attracted to.