Experts Say You Should Have These 14 Things in Common With Your Partner

This is a key long-term issue for couples, as kids are a huge factor in a relationship that's looking toward the future. "It's very difficult to talk someone into wanting kids or out of wanting kids. Compromise on this can lead to a lot of resentment and unhappiness," said clinical psychologist Natalie Feinblatt, PsyD. It's fine to be flexible, but make sure you have the same vision.