Is it LOVE?

Is it LOVE,

..when you encounter sleepless nights?
..when you think about only one person from among the rest of your friends?
..when you feel that you cannot end the day without saying a word to her?
..when you believe that only her gentle voice can make you feel lonely no more?
..when you wake up in the morning and the first thing you ever want to see is her smile?
..when the thought of her feeling sick scares the hell out of you?
..when you know that she feels for you and still says that you are only a friend?
..when you want to give her the whole world just to see the tears of happiness in her eyes?
..when you know that something you say might upset her and so you avoid saying it once & for all?
..when she knows that you are a loser and she still accepts you the way you are?
..when you remember every word she says?
..when you consider her heart & mind as her most important assets?
..when you blend into her way of thinking/reasoning? (or)
..when you feel that you are unintentionally incorporating some of her habits into your daily life?
..when you want to hold on even when she says she has to let go?

If LOVE is so pleasant, then why does it make me feel uneasy?