(simple but important)

Without respect, no relationship will last very long, nor can two people bring out the best in each other. (p. 61)

2. FIND HAPPINESS WITHIN

Happiness is not something that someone else, like a lover, can give to us. We have to achieve it ourselves.... True happiness is obtained through fully realizing our potential. (p. 64)

3. BE YOURSELF

Real love is not two people clinging to each other. It can only be fostered between two strong people in their individuality... If you want to experience true love, it is important to first sincerely develop a strong self-identity. (p. 67)

4. STRIVE FOR THE SAME GOALS 

"Love is not two people gazing at each other, but two people looking ahead together in the same direction." Antione d Saint-Exupery (p. 62)

5. POLISH YOURSELF FIRST

Ultimately, the relationships you form are a reflection of your own state of life. The same is true of friendship. Only to the extent that you polish yourselves now can you hope ft develop wonderful bonds of the heart in the future. (p. 66)

Courtesy Daisaku Ikeda's book  Discussions on Youth, new edition, pp. 59-70.