Get to know him. If you’re not into him, then treat him like you would any friend. The friendlier you are and the more open you are, the easier any exchange between you will be – even kissing and spooning. It’s about establishing a level of trust. Just relax and talk to him about other things besides what your project is, that will help you feel more comfortable, more trusting, and more confident in anything you do with him.
I know you feel weird being around him when you haven’t had much experience and it’s a lot of pressure when two people are partnered together like that, just total strangers who have to work together, but he’s lucky to have gotten someone like you. You actually care about making it work. You want it to be good. You want to make sure things go well for you both. That’s the best thing anyone could ask for in a partner. It would be a thousand times worse if you didn’t give a shit how it looked and he would be forced to do all the work. Think about that!
I’m SURE it’s not nearly as awkward or terrible as you think it is. We all have a way of making things seem so much worse than they really are. Human beings have a TERRIBLE sense of self perception, we are just ridiculously obtuse about how we perceive ourselves as opposed to how others see us. You are pretty. You are attractive. Just be friendly and get to know him. Everything else will work out. Have faith in yourself. If you keep beating yourself up for all the things you think you’re not, THAT is what will make it awkward and uncomfortable. If you have to fake confidence for a while, that’s okay. By faking confidence, you actually give yourself a little bit of confidence in return. Odd, I know, but it works!