Janine James and Nasaria Valadez planned their wedding to fall on 11/11, six months before either of them proposed.

After meeting at a party seven years ago, Robert Conner was determined to see Maggie Steffens, an Olympic gold medalist, again — even if it meant traveling hundreds of miles to do so.

The connection between Philip Taylor Jr. and Kristin Dyson was so strong that they stayed until closing at a restaurant and then a wine bar. “It felt like the whole date was 10 minutes,” Ms. Dyson said.