Boy/Girl Party Help

So heres the deal...im having a boy girl party this weekend and its pretty much just to have my friend and her crush to hang out (he likes her back they are just not "going out") but they came over last weekend too but i want this one to be better then last week. I like one of the guys comming and he said he doesnt know if he likes me back or not. I want to play games that we can flirt and laugh but not so much that the people there that arnt with the person they like dont feel left out...help pleaseee