26 years on this earth, 3 years of marriage, 1 long term relationship, several short term relationships, 2 one night stands and a couple late night, drunken chats with a couple of girls have brought me to one conclusion:
there is no magic formula, no secret tip, no easy way to a perfect relationship. If there was there would be no single people, no divorces, and everyone would be happy. It doesn't have everything to do with age, I was ONLY
23 when I got married (some say that is young, but I know some that were much younger yet, and are still together after 10 years
).
Keep trying, experience everything life has to offer, so times you win, sometimes you lose. Hopefully you're better off than before.
That is my advice, take it as you will.