If you have no intention, don't lead him
You don't want to make him hopeful or break his heart, so it's important to let him know that you just want to be casual tinder free dating. You don't have to necessarily say that when you saw him on his face, that moment, just cleverly put into your conversation like this, "I really like your company and spend time with you, but I Hope you know, I'm not looking for anything serious at this moment. "
Let him think about it and see if he is still keen to continue this casual mature hookup relationship. Maybe he has the same interests as you, and you have arranged a date for yourself, but if he does not, it is better to let him go because he may be looking for a serious and loyal relationship, and you may not be able to achieve it for a long time.
Basically respect him
As with all dating relationships, whether serious, casual, or even grey areas. It is important to respect everyone. Even if you think this casual date is short-lived, you will most likely never see him again, and you still have to give him the respect he deserves. Don't think you can escape, because you never know when karma comes. Even you are just in fwb dating or nsa hookup, show some respect. What you want is purely hookup free fun, so does your adult friend.
Explore as much as you want
Because there are no strings attached to an informal date, you do not have to adhere to the restrictions necessary for a serious relationship. For example, check your lover regularly, be sensitive to his feelings, and be with him almost all the time. You can meet or leave at any time. Also, you should seize the opportunity to explore what you've always wanted. If you want to know what a casual hookup like friends with benefits dating, then just go for it.
Dating with several different men
Don't put all your eggs in one basket, this is indeed a very wise statement. Especially when you are dating casually, don't just date one adult friend. When you are casually dating a man, you may be overly dependent on him, and over time, the relationship will inevitably develop. The benefit of casual dating is that you can meet many people you like, and that's your right. If you can date someone casually, go for it. However, diversification is often good, rather than investing solely in one person. You never know when he will end this casual relationship, and you will eventually grow old alone. There is no grass everywhere, so open your net.