Well, you'll have lots to explore when you have sex. You're also starting to find that love must be maintained, rather than it 'just happening'. Its a normal phase in a relationship.
Did you know psychologists describe different stages of love:
Three Stages of Love
Lust or romantic love is the first stage of love. It's driven by testosterone and estrogen. Mating is the evolutionary purpose of this stage of love; it creates strong physical attraction and sets the stage for emotional attachment. In this stage of relationship, endorphins soak your brain and you're immersed in intense pleasurable sensations. Your lover is perfect, ideal, made for you. In this stage of love you feel exhilarated and even "high" (similar to the feeling you get after you eat really good chocolate or have a great workout). You feel infactuated in this stage of relationship.
Physical attraction and power struggles make up the second stage of love (the lovesick phase). You may lose your appetite, need less sleep, and daydream about your lover on the bus, during meetings, in the shower. In this stage of love, dopamine, norepinephrine, and serotonin are racing through your body and brain. You're also trying to shape your lover into your ideal partner – which is where the power struggles come in. In this stage of relationship, you're becoming more realistic, and you two may fight about things like whether or not to buy organic food or listen to country music. The infatuation is wearing off, a strong emotional attachment begins to set in, and feelings of infatuation fade.
Emotional attachment or unconditional acceptance is the third stage of love. It involves commitment, partnership, and even children (a fear of intimacy prevents many from reaching this stage of love). In this stage of relationship, you're aware of both positive and negative traits in your partner, and you've decided you want to build a life together. Confrontation is most likely to occur in this stage of love (though if you're authentic and honest, it'll also happen in the second stage of love). You and your partner will either work towards a healthy, loving relationship or decide to call it quits.
The article I pulled this from also has suggestions about how to keep the love alive. Here's the link for those who want, to keep the post short:
[url]http://psychology.suite101.com/article.cfm/love_love_me_do[/url]
Second thoughts can generally be amended with judicious action; injudicious actions can seldom be recovered with second thoughts.
--Cyteen by C.J.Cherryh