Currently taking a summer class at uni. I've had 3 classes. Sit with 2 girls and 1 dude. I wanna fuck 1 of these girls. I sensed some IOIs in class and walking back to our cars from this girl. We have a group text with everyone from our table, so I have her number.

I want to hit her up and tell her to come over and smoke tonight with me, my roommate, and his gf. Is this a good move considering we haven't spoken outside of class (other than the group text) and I only have her number bc of the group text? Do I seem desperate in anyway?

I know this sounds stupid but I'm in a slump recently and not thinking straight. Thanks guys.