Both sides have similar conditions. Do you still need aa system? Personally, I think aa system can be carried out properly. In some occasions where there are not two people, such as when two people are with friends from both sides, you can follow the principle of collective aa system, so that you will not appear to be doing anything special, and you will treat everyone equally and have more affinity for everyone.
If it is a daily date between two people, there is little risk of not using aa system. Speaking of paying money, we can treat each other. For example, if you invite him to a movie, then he should invite you to dinner, or pay for popcorn and coke. It is best not to differ too much between the two. In this way, if you form a habit for a long time, you will not be as cold as the aa system, and you can add more interest and love.