Hi BrianneTollison and welcome to Scarleteen.
First of all, I want to assure you that your feelings
are not inappropriate. We feel how we feel -- we can only control our actions. This does sound like a situation where acting on your feelings is not appropriate, especially at camp where there is a pretty serious power imbalance regarding a camper vs. counselor. My hope is that she's good enough at that job and has healthy, solid boundaries and would not entertain the idea of dating a camper. This would be an inappropriate relationship.
Jealousy is another feeling that's perfectly natural. There are many suggestions for processing these jealous feelings here: Jealousy: Making Friends With a Green-Eyed Monster
. I highly recommend you look through that list!
In the meantime, I'd encourage you to focus your energy on other things. Do you have friends who are going to camp, as well? Perhaps you could make some fun plans with them. Making space for your feelings can be helpful. For instance, acknowledging that your feelings exist and that you aren't doing anything wrong can be helpful, even if you have to repeat this to yourself many times.
Additionally, it sounds like most of your interaction with this person is online? Have you hung out outside of the internet at all? Sometimes we can develop strong feelings for people based on what we see online, which isn't usually the entire story of being with someone. We all put a certain face forward, especially in the specifically curated domains of social media and videos. That's just something else I'd like you to keep in mind.
Feelings like this can feel so big
that it's tricky to see your way out. One benefit to aging, for me, (I'm 32) is being able to look back and see those seasons of crushes, sometimes obsessions, sometimes love... and look at them with the benefit of having lived through them. This doesn't mean that your feelings are not real -- I'm also curious about how many serious crushes or relationships you've had so far? If any, how did those look and feel for you? Any difference between IRL crushes/relationships or primarily online?
Besides the above linked article about jealousy, I'm also tossing these your way:Puppy Love: The Do's & Don'ts of Crushes (With Help from a Very Small Dog)Self-Care a La Carte