Love is invisible but you can't deny it's there. You can't see it, but you can feel it near you and there are visible signs of its presence. It can be their warm hands in winter or the smile on their face. There are a thousand clues when love is in the air. Some of the feelings that love evoke can be frightening or sometimes unhealthy. Rest assured though, if you're experiencing some of the less pleasant side effects, you are far from alone. It's normal to experience them. That being said, let's take a look at 12 signs you may very well be in love with.