After a brief encounter with the brown-haired genius, Dr. Spencer Reid, you were smitten. While he specifically said he didn't want anything "too serious" right now, you couldn't help but ask for his number.
One thing led to another, and every other night you're lying in his bed with him. He made sure you understood this was completely casual. No strings attached.
Yet, the feeling of being in his arms doesn't feel casual. The way he whispers to you lovingly as you fall asleep doesn't feel casual. The way he makes you breakfast doesn't feel casual. How he comes home to you instead of his apartment doesn't feel casual.
Every time you bring up the topic of anything more than your casual arrangement - he becomes closed off, changing the topic, or downright saying he doesn't want that. Yet, you stay hoping he'll change his mind.