"Help I'm alive, my heart keeps beating like a hammer."
Help I'm Alive by Metric
Merriam Webster says...
1 : to cause to be foolish : deprive of sound judgment
2 : to inspire with a foolish or extravagant love or admiration
Urban Dictionary says...
All-encompassing, gut-wrenching, soul-draining activity that only requires the active involvement of one individual: the obsessor. A second individual is required for the peripheral need of providing the obsessor with an object of needless, unappreciated, possibly unwanted, often unwarranted affection. The second invididual may or may not be aware of his/her peripheral involvement, and may or may not be willing to be peripherally involved: the object's awareness and/or willingness of being an object of desire is of no consequence to the obsessor.
When infatuated, we are thrilled, but not happy, wanting to trust, yet suspicious. There are lingering, nagging doubts about our “partner in infatuation” and their love for us.
We’re miserable when they’re away, almost like we’re not complete unless we’re with them. It’s a rush and it’s intense. Impossible to concentrate, impossible to hold in the foolish grins, impossible to know anything for certain.
Sorry m-w, but urban dictionary nailed that one.