She doesn't know.

Caitlin Snow was in love with Barry Allen. In her mind, the feeling could never be mutual. They were living two different lives - Caitlin was a biochemist, a doctor who wore her emotions on her sleeve.

Whilst Barry was a speedster who spent his days doing everything for other people; burying how he truly feels about his personal physician with the lives he spent saving.

It was about time the two opened their eyes to find the love that was burning between them.

[THE FLASH]
[DISCLAIMER: I do not own these characters, simply the plotline]