Give us a man who can talk about history, science, politics, philosophy, or really any interesting topic that requires some level of intelligence. You don't even have to be an expert - knowing a little bit about a lot and being able to hold a smart conversation is more than enough. As we've mentioned, physical traits don't end up keeping the relationship together. But intelligent conversation between couples is something that can help it last a long time.
If you're interested in a particular subject, share it with your date. Showing off your knowledge is a turn on, as long as you're not being arrogant about it. Open up a conversation and see what she has to say about the topic, too. Two-way dialogue is a great way to form bonds and keep your relationship strong.