First off take a good amount of time to REALLY get to know each other. Then....

If there is any internal conflict that you feel about the person listen to those red flags & dont just logic them away.

If you have financial differences they are critical. If a person has attitude issues thst bother you, they are critical. Values are critical. Differences are good but if they are never worked through & resolved they will become a problem.

Take time to really know the person & their the aspects of their personality. Use your logical mind wirh them not your emotional in analyzing the relationship.

Above all make sure in ANY relationship make sure that both people are capable of emotionally connecting (Im not talking about the connection of having sex)....that is realy a deep down connection at the soul level & that its not after awhile just a superficial connection & that things arent just progressing in the relationship because thats what is supposed to happen....it needs to be REAL.