Abstract from the study and a summary of the article talking about the same study. Unfortunately, I can't find the full text of the study.

6 ways to invest in your romantic relationships to strive long-term:

  1. Emotional gestures: compliments, emotional support, being present and responsive to your partner's emotional needs.
  2. Material gestures: doing chores, financial planning, preparing gifts, leaving love notes, planning dates.
  3. Respecting personal space: a healthy balance of intimacy and independence.
  4. Prioritizing physical intimacy: physical affection, making time to connect physically, being open about your sexual needs and desires.
  5. Engaging in shared activities: a weekend trip, cooking together, starting a new hobby.
  6. Helping your partner's friends and family

This is a comprehensive study that aimed at identifying the effective tactics for investment in couple relationships and included the following three phases. (a) A preliminary qualitative project that collected potential ways to invest in couple relationships. (b) We identified 46 ways to invest in relationships and grouped them into six tactics using EFA, and then we validated a relational investment tactics scale. The six tactics are (1) emotional gestures, (2) material gestures, (3) personal space, (4) physical attractiveness and sex, (5) shared activities, and (6) help the partner's family and friends. (c) Finally, we evaluated the frequency of use of each of the 46 ways of relational investment among 483 respondents. Findings show that respondents who provide emotional and material gestures are involved in shared activities with their partner and help their partner's family and friends report higher marital satisfaction. We propose several practical implications based on these results.

https://onlinelibrary.wiley.com/doi/10.1111/pere.12575

So do you agree with these ways? If you're in an LTR currently, what ways do you practice? What does your partner do that you value and appreciate the most?