Be clear with him about what you are looking for from the very beginning. If you pretend you are okay with hookups, then don’t regret when he doesn’t contact you after you slept together for one night. Therefore, you should be clear with your partner about what you want at the very first. It can be very hard to convert a nsa one night dating relationship into a serious one. On the other hand, you need to convert his mind by clearly showing your standpoint. If he wants to be with you, the only way is to start a serious relationship with you. Besides, it would be a waste of time to tangling with a person who is not interested in what you want. You should spend time with the person who want the same thing as you do. Don’t pretend to be casual just because he is. This could give him a wrong impression that you are also looking for casual hookups. In this way, there is fewer chance for him to take you seriously.
Don’t sleep with him unless you are sure that he is all for you. If you sleep with him on your first date, you might just get what he wants. To be honest, most men have one purpose at the first stage when dating a girl---getting in their pants. If you give them too soon, they would quickly lose interest. You have to let them know more about you before sleeping with them. They need to know that there are more qualities in you that fascinate them than just sleeping with you. By the time you sleep together, they already pass the first phase of wanting to sleep with you. This should be a very good score point.
Don’t be so easy. This calls for a little trick. For example, don’t answer his phone so quick. Don’t reply his messages right away after you just received them. I hate to say this, but it is necessary to play hard-to-get in this case. It really works for most people. Just don’t give him an impression that you are always there for him. It would raise his competitiveness in trying to be the special one for you. During the process, he might fall for you too.