I can definitely tell you how to pick the wrong one (twice for me). Whatever you do, don’t ignore or justify red flags; those issues don’t get better with marriage. Additionally, there will be bad along with the good; if you and your potential partner aren’t committed even when things are off, you will never survive. Every couple I know including my parents who were married 66 years had their issues that could have ended their marriage if they weren’t committed. There are potential issues with blending a family; be aware of them and don’t ignore the issues if they come up. I pretty much see the whole thing as a gamble; you may win or you may lose with the person you are dealt. Good luck!!!