the guy in my class

i started highschool in health and upbringing or whatever yall call it and theres only four guys in our class, so not much option. This guy tho he came to school one week in and when i saw him he was FINEE. Anyway we didnt really talk until me and him and another guy came in the same group. He was funny and a little nervous talker, but we talked atleast and then he had to go to a meeting idk what he did wrong, but yeah. Then we had to finish the project and hand it in and since he was gone i felt like i had to fill every answer out for him since the other guy didnt want to and i didnt want him to fail for no reason. He didnt know i did it for him tho and two days ago we got our project back and the teacher said that some failed and some passed and he was scared to fail i guess cause he didnt know i wrote for him, but then he passed and the other guy said i wrote for him and when he was handing in some pencil he used to thr teached he looked at me for a long time and you know those thing boys do like clench their jaw together and then theres like a line at the center of the jaw if you know what i mean. Ive not been taking that of my mind for two days now. I mean i didnt have a crush on him really i just found him attractive but now IDK and also idc ik that yall dont understand how badly i wrote, but whatvaaa. What should i do flirt with him nO?