Harry's Masculinity Report 2018 https://s3.amazonaws.com/harrys-cdnx-prod/manual/Harry's+Masculinity+Report,+USA+2018.pdf - Men are happiest when a part of something where they feel needed and valued.
Anderson, Cameron & Hildreth, John & Howland, Laura. (2015). Is the Desire for Status a Fundamental Human Motive? A Review of the Empirical Literature. Psychological bulletin. 141. 10.1037/a0038781. - Male need for respect.
Murray, S. H., Milhausen, R. R., Graham, C. & Kuczynski, L. (2016). A Qualitative Exploration of Factors That Affect Sexual Desire Among Men Aged 30 to 65 in Long-Term Relationships. Journal of Sex Research, DOI: 10.1080/00224499.2016.1168352 - Men want to feel wanted and needed.
Terri D. Fisher, Zachary T. Moore, Mary-Jo Pittenger. Sex on the Brain?: An Examination of Frequency of Sexual Cognitions as a Function of Gender, Erotophilia, and Social Desirability. Journal of Sex Research, 2012; 49 (1): 69 DOI: 10.1080/00224499.2011.565429 - Men think about biological needs (e.g. Hero Instinct) more than women.
Gender Differences in Implicit Self-Esteem Following a Romantic Partner’s Success or Failure," Kate A. Ratliff, PhD, University of Florida, and Shigehiro Oishi, PhD, University of Virginia; Journal of Personality and Social Psychology, online Aug. 5, 2013. - Men have lower self-esteem when their partner succeeds and they fail (i.e. they don't feel needed/irreplaceable).
Canevello A, Crocker J. Creating good relationships: Responsiveness, relationship quality, and interpersonal goals. J Pers Soc Psychol. 2010;99(1):78-106. doi:10.1037/a0018186 - Showing him you believe in him and he's the one for the job.
Reis HT, Lemay Jr EP, Finkenauer C. Toward understanding understanding: The importance of feeling understood in relationships. Social and Personality Psychology Compass. 2017:11(3):e12308. doi:10.1111/spc3.12308 - You value his point of view and abilities.