Everyone has a different idea of what being a “big man” means. Maybe you want your boyfriend to be more responsible, confident, or dependable. Instead of expecting him to read your mind, tell him what you’re hoping for.
Talk about the specific behaviors that matter to you. For example, you may want him to keep his promises, make good decisions, or take more responsibility. Clear communication helps much more than dropping hints.
At the same time, accept your boyfriend for who he is, not who you hope he’ll become overnight. Real growth takes time, and healthy relationships support each other’s progress.