Spencer has been through so many bad and even traumatic experiences involving love that it makes him sick just remembering the failed attempts at romance.
There was Jennifer Jareau, the coworker he had a crush on during his early years at the FBI BAU, who took another coworker, Penelope Garcia, on what was supposed to be a date with him.
Elle Granway who left before Spencer even realized he loved her, leaving him behind like everyone else seemed to do.
Lila Archer, the actress and model, who grabbed him by the pool and was his first bed date, which just didn't work out. And the barista Austin who he won over with a magic trick, but never called him again.
Not to mention Maeve Donavan, who he thought was the love of his life, who was being stalked and killed in front of him before he could tell her he loved her or even hold her hand.
Cat Adams was a torment, not to be considered a flirt in any way, he hated that woman with every atom of his body for everything she put him through.
And his most recent ex-girlfriend, Maxine, made Spencer realize that maybe love wasn't something for people like him. The genius closed himself off to romance for fear of being left behind, traumatized or being forced to relive any of his other experiences.
That is, until he walked into the same bookstore he usually spends his time in when he's off in the city and found you, standing in front of a bookshelf, holding a copy in your hands, looking stunning and distracted.
He barely noticed when your feet moved towards him to greet you with an awkward and cute smile. "It's a great book, the one in your hands, I mean. Spencer Reid. My name is Spencer Reid." He fumbled and stuttered.