If you would like to go deep in to your relationship, go deep in to tantra.
What means go deep ? It means go beyond the "honey moon" face the difficulties and find new good way to go through them. "What would not kill us will make us stronger". Heal yourself and your relationship here and now. Don't run away in boredom, routine or to next relationship, because after " honey moon" you will face the same problems. Don't let history repeat itself. Do something different for example stay ( in love )