So I met two freshman girls at my university. They both live in the same dorm hall, in fact right across from one another. They are both in the same club as I am, we will call these two Missy and Prissy.

Prissy is a 6/10 who went to a all girls school and is pretty friendly with all her hall mates.

Missy is a 8/10 who seems like she knows less people or at least don't talk with a lot of her hall mates.

I initially went for Prissy because I thought she might be easier. We're getting along, I've been push pulling a bit, but every time I give an opportunity for us to hang out she is always busy with midterms. So I'm getting pretty tired of Prissy and I began talking to Missy. Missy seems to like the fact that I want to spend time with her.

So how to I handle this situation? I don't want to completely block off one but I don't want it to look like I'm just a player in case they ever compare their texts. How do I get them to be jealous of each other for me?

Your making the well worn AFC assumption...that women dont want a player...when infact thats exactly what women do want.
if women see you in the company of hot women, then all women wanna fuck you.
so no matter what bullshit woman say they want...they actually dont want..this is why there are soooo many afc guys, they think if they behave how women say they want men to be "gentlemen" and "loyal" that this will work in the guys favour...will it fuck...
a player may not admit he is fucking around on his women but any woman knows a player when she meets one..because he is too fucking slick...so she secretly knows what she is getting into...even if she cant admit it to herself.
so if u want two women tell them both your not looking for "relationships" that you wanna date and have fun..this attitude is great bait...as it indicates your a fucking player and as i said its really what women want...they like the competition and the idea that the guy fucking them is in demand with other women...now not allll woman are like this but fucking tons are and especially young chick in college where its all about popularity and ego and bullshit like that...come off like this and that way neither of them can say fuck all if you fuck around on them.,
honesty is the best policy ive found.

I am in the same situation right now. When i was gameing one girl, the other girl begane to be jelaus, and after that she wanna be more with me. One day second girl, get to me and invite me for launch

Your in pole position then...all u gotta do is continue playing one off against the other...ramp it up to the next level.
Heres a little story which may help...
Im dating this girl casually...she knows im not exclusivley seeing her...this chick will fuck but wont suck...so i let my old friend make it known to her im getting BJ's off another chick...
the girl who wont suck my dick gets pissed at me cheating and i remind her im not cheating as we aint exclusive and also remind her that i like blow jobs so i went and got some...which i did....i siad its no big deal its only a blow job...like a true mother fucker....and guess whatt...u guessed right
every other time she immidiatley went down on me for at least 30 minutes a time...
competition between women gets the job done