Chemicals like dopamine run the infatuation phase.

Once a relationship begins, both partners are in for an emotional ride. There will be ups and downs, especially the longer the relationship runs its course. However, in the beginning, you might be incredibly optimistic and feel as if your partner can do no wrong. This is the infatuation phase of the relationship, and learning more about it will help you prepare for what's to follow.

How Infatuation Works

During the infatuation phase, your body's "feel-good" chemicals, such as dopamine, are skyrocketing, suggests counselor and therapist Zoe Hicks on PsychCentral. You might feel the need to obsessively be in contact with your new flame, whether through texts, calls or face-to-face dates. You will even feel compelled to begin planning your future together. As great as it might feel, this level of euphoria cannot biologically last, asserts Hicks.

The Next Phase

Once your hormones settle down, your mind wonders what happened to the intense feelings you had earlier, writes clinical meditation consultant Andy Puddicombe on "Psychology Today" online. You will also begin to see the flaws in your partner and your relationship. Rather than comparing this calmer phase to the hormonal wave that came before it, practice living in the present and learn more about your partner's true self. In turn, he should learn more about you, in your now level-headed state.