There's nothing quite like the euphoria of falling in love. The excitement and anticipation leaves you giddy. It may come on suddenly and take you by surprise. If you have never been in love before, recognizing the signs of falling in love can help you understand what is happening to you.

One-Track Mind

When you are falling in love, your body reacts to the rush of intense emotions. As hormone levels adjust, you can become fixated on your significant other, says Deborah Khoshaba, a clinical psychologist and author of "The Early Stages of Falling in Love" on Psychology Today's website. Rather than pay attention in class, you may find yourself daydreaming about your new romantic interest. You may be reliving your last date, thinking about how attractive he or she is and how lucky you are to have this person in your life.

No One Else Turns Your Head

A sign that you're falling in love is that you have no emotional or romantic desire for anyone else, says Yvonne KristĂ­n Fulbright, who holds a doctorate in International Community Health Studies and is author of the article, "How Do You Know When You're in Love," on the FoxNews.com website. You don't notice other attractive people as you once would have. Your new romantic interest is the only one you can think about and the only one you want to spend time getting to know.

Your Body Language

One of the subconscious signs of being in love is not being able to take your eyes off the person, according to Dr. Lucy Brown, a neuroscientist, quoted in the article, "5 Signs You're in Love" on the YourTango.com website. You may find that you and the other person aren't aware of what is going on around you. You sit or stand very close to the other person. You lean toward each other. You hold her hand, put your arm around her or gently touch her arm while talking.

You Want to Know Everything

When you are falling for someone, you want to know everything about his or her life. You want to know where this person grew up and how many siblings were in the family. Not only do you want to know basic information about this person, you also want to know his or her innermost thoughts. You want to hear about your new partner's hopes, fears and dreams for the future.