Frankly, there is a lot wrong with this comic, and almost nothing that's right.
Let's start with the story. I honestly don't believe that these two girls have anything more than a platonic relationship. You give the reader no reason to believe otherwise. Sure, you list some traits that that you say Courtney admires in some other girl, but simple admiration is not the same thing as love or even attraction. It would be the same thing as saying that you admire Hitler's ability as an orator, and then deciding you love the man responsible for millions of deaths.
How old are these girls supposed to be? I assume that they're about twelve or thirteen since a love story between anyone younger just doesn't make sense. (Basic biology and psychology will tell you that before puberty children aren't physically or emotionally capable of anything more than a bond between themselves and their family. This is why young children generally don't have anything more than, at best, platonic relationships.) Given that, if she really is twelve or thirteen, wondering if two girls could be in love makes no sense. By that age, Courtney should at least know what the word lesbian means; if she doesn't, as you seem suggest, she is the world's most sheltered child.
The scene that Girl 1 tells her parents that she's going on a date with the other just bugs me. (As a note: yes, I will stop referring to them by name. Neither really has an actual personality, and after the scene change I really can't tell who is who.) Neither of these two characters seems ballsy enough to introduce their date to their parents the first time they go out, let alone confront their parents about their sexuality. So why did it happen? By the by, in real life the scene you depicted rarely happens, if ever; no one goes up to their parents and introduces their date the first time they go out. I'm also left wondering why you didn't feel the need to actually include the Girl 1's parents. It would have been interesting to see her parents' responses to this and the subsequent conversation.
All in all, the writing is just awkward, and the idea that these two girls are in love is just unbelievable. Maybe if you'd shown us the events leading up to the beginning of the comic it would have seemed more believable, but just saying Courtney admires the other girl and mentioning "that maths quiz where we didn't have calculator" really doesn't concrete the idea that these two are more than casual acquaintances. Oh, if "the plot hasn't started yet" why did you feel the need to make six "pages" of a comic that are irrelevant to the story?
By the way, proofread your dialogue before you put it in the comic.
Now for the art: you should really follow the tips that maficmelody gave you. The way you positioned the panels and their shapes make no sense whatsoever. You should change where you positioned the next balloons, too. Having your text butt up against the edge of the panel, like in "page" 5 and 6, really makes the dialogue hard to read. Also, "page" 6 is just awkward to read. At first glance, you assume you should read the speech bubble on the left first, but you're supposed to read the other. It just makes no sense. You'll notice that I've been putting the word page in scare quotes; that's mostly because, together, all of what you've shown would make maybe one page, front and back, of a published comic.
The characters need help, too. First off, anatomy: learn it. If you say that it's just your "style" shit will really start flying. Anyway, your characters aren't consistent between pages, or even between panels on each page. Take "pages" 3, 4, and 5, for example. On "page" three, the two girls are almost the same height in the first panel, and then they can suddenly look eye to eye in the second panel. Then you move on to "page" 4, and one girl is a whole head taller than the other, rather than the two or three in difference on the previous page. When we finally get to "page" 5, their bodies are the same size, but one girl's head is vastly smaller than the other. Speaking of "page" 5, your character look completely different; so much so, that it's incredibly hard to tell who is who. Neither of the girls' hairstyles are remotely the same, and each seems to have gotten hair extensions between "pages."
Why is this so long, you ask? Because this comic is "serious." LOL