By the time a man reaches 50, he usually knows what he likes, how he spends his time, and which routines make life comfortable. That self-knowledge can be an advantage in a relationship, but decades of independence, previous marriages, family responsibilities, and ingrained habits can also make compromise harder than expected. Later-life relationships aren’t automatically more secure either: recent Pew Research Center data show the divorce rate among married adults 50 and older was 10.3 per 1,000 in 2023, after rising substantially from 1990. Research on older couples also suggests that everyday communication and emotional behavior remain closely connected to relationship satisfaction. Here are 10 relationship mistakes men over 50 can make without recognizing the damage until their partner starts pulling away.