Group project with only girls and it's tempting. Advice?

In college I'm working on a group project with 5 girls and it's a pain really. I can't concentrate and I get dizzy in their presence. To 4 of them I am pretty distand so it's okay-ish, but there is one girl I spend a lot of time with and we like each other. We love talking about the same topics but I noticed she is a bit into me... and I'm also attracted to her. We study a lot in the library and get to touch each other and we both like it. But in the core I know it's wrong. Every day before I go to sleep I promise myself I will control myself but the moment we study, I lose control and start touching her and she likes it. It's so tempting... She even knows I'm on NoFap and respects me for that and wants to support me, but actually I should just stay away from her for my own good. I notice I'm falling for her and I don't want any kind of relationship right now. Also I'm stuck in a relapse loop and this situation only makes it worse and harder for me...

I thought about setting up rules and boundaries when we study, like no touching, not too much eye-contact and only talking about important stuff, also only meeting for the group project. She would say yes but it would get harder to actually study because we wouldn't distract each other. But I see my progress crumbling and my self-discipline and self-respect falling apart. Thoughts?