Fics like In the Cold Light of Day

To find and stop the production of a new drug that's turning people into pseudo-meta-humans, Barry has to rely on Leonard Snart for information. When the information leads to a couple's therapy retreat in Keystone, Barry and Len play the role of an estranged couple to infiltrate and find the drug's source. Along the way, both Barry and Len attempt to repress the emerging feelings they have for one another, but pretending to be a couple isn't exactly making the situation any easier.

You may also like

all the rebels call me baby after midnight by QLaLa (The Flash (TV 2014))
of course, you idiot by billyhargroovy (The Flash (TV 2014), DC's Legends of Tomorrow (TV))
The Frozen Heart of the Sea by Mistvalkyrie (The Flash (TV 2014), Arrow (TV 2012))
Can I Have a Kiss? by ColdSerenity (The Flash (TV 2014))
Hands-On Stimulation by Crimson1 (The Flash (TV 2014), DC's Legends of Tomorrow (TV))
Just for a Second by Linzero (The Flash (TV 2014), DC's Legends of Tomorrow (TV), more)
Almost Lost Him by ImaKaraTabiHe (Justice League - All Media Types, The Flash (TV 2014), more)
Lightning Hot (Your Coffee, That Is) by HolyCafe (The Flash (TV 2014), Arrow (TV 2012))
Bridge over Troubled Water by HolyCafe (The Flash (TV 2014), DC's Legends of Tomorrow (TV))
Lovesick by Crimson1 (The Flash (TV 2014))
Trick or Treat by HolyCafe (The Flash (TV 2014))
Never Call Me Leo by Crimson1 (The Flash (TV 2014), DC's Legends of Tomorrow (TV))
Seeking Comfort by ColdSerenity (The Flash (TV 2014))
A Place In Time by DustyHalo (The Flash (TV 2014))
The Immaculate Barry Allen by Crimson1 (The Flash (TV 2014), DC's Legends of Tomorrow (TV))
Public Enemy, Undercover Lover by Crimson1 (The Flash (TV 2014), DC's Legends of Tomorrow (TV))
At the End of the Rainbow by Crimson1 (The Flash (TV 2014))
Realm of Darkness by Mistvalkyrie (The Flash (TV 2014), Arrow (TV 2012))
Love Me by sinplicity (The Flash (TV 2014))
having his back by vannral (The Flash (TV 2014))