You don't find girls at parties. Truthfully, you don't WANT to find girls at a party. Any girl after the first month of freshman year who will hook up with someone she met at a party - has already done so. The best route is to find an activity that you like and meet people through that, then you actually have something in common and a chance to spend time talking sober. That forges real relationships, which ultimately are a lot better because you have someone to lean on not just someone to hook up with. But truthfully, having someone is important and hardly precludes you from being in a successful startup. There are 20 of us now at my startup and only 1 or 2 are single.