This kind of going out with new partners differs from traditional dating. You are focusing on the quality of a single meeting, not adapting your behaviour to make a committed relationship work for some time. First impressions are important, but they may not be relevant tomorrow.
Meet in a safe place where you have a chance to get to know the person and observe his or her behaviour.
Engage in casual conversation and see how you feel.
Choose to engage in intimate encounters when it feels right.
If someone doesn't feel like a safe partner, then get out of the situation.
The other person may not want a sexual encounter after meeting you. Don’t push for more than someone else agrees to do after talking online. Enjoy hookups with like-minded users.