For guys, it can often be difficult to be aware of or even admit that you are falling in love. No matter how tough and cool you might think you are, there will come a time when you meet a girl that can turn your knees to spaghetti and your heart to mush. Even if you think of it as simply lust, it may be a lot closer to love. Look out for several indications that you are head over heels in love with a girl.
If you are finding it hard to fall asleep at night because you are thinking nonstop about a girl, then you are falling in love. Add a few bonus points if you get all tingly, sappy and fuzzy when you wake up from a dream and remember that she was in it.
If you are constantly distracted by thoughts of the girl, love is in the air. This includes not being able to concentrate on studying for school or making easy mistakes on the job because you simply are not focused.
Most guys have a voracious appetite. The only time they seem to lose it even remotely is when they are falling in love. Food all of a sudden becomes significantly less alluring. If you're so preoccupied with pining over a girl that you forget to take note of the signs that your body needs food, you may be in love.
If you're a "guy's guy" who during normal circumstances couldn't care less about his hair or his clothes, but all of a sudden wants to look immaculately coiffed and presentable around the object of his affection, you are falling hard for a girl. If getting up early to shave and perfect yourself is a new priority of yours, you truly care about this girl and what she thinks of you.
If you experience a healthy little dose of jealousy when you think of a girl doing things without you, you're probably in love. If you feel slightly hurt that the girl went rollerblading with her best friend in the park over the weekend and wonder why you never heard about it, you are dealing with a slight case of the green-eyed monster.