The Soulful Atom

Indications:
1) Pre-occupation
2) Listlessness
3) Random smiles
4) Laughing alone in the middle of a certain tedious task at work
5) LOT of thinking over nothing in particular
6) Passing by certain places (unknowingly and at times purposely) reminding of
certain happenings
7) More smiles
8) Restlessness
9) Heightened impatience
10) Relief at specific happenings (seeing a green dot somewhere or a pending message)
11) Being at a loss of reasons
12) Strange butterflies in the stomach
13) Re-living the same by just thinking about it
14) Heaps of confusion
15) A lot of first times
16) Desire to get to the root of it and yet enjoying every moment of it..
17) Missing? and trying not to
18) Waking up at odd hours
19) And so on...

Any guess about the malady? If yes then the remedy too please!!