Desert Exposure by Zoë Normandie

PhD Sociologist Olivia Forbes wins a contract to investigate socio-cultural problems in a SEAL troop and is launched overseas to shadow the guys on base in the Sahel.
US Navy SEAL Ryder Luciano has been carrying the weight – and the secrets – of the troop for too long, and he damn well knows he’s out of runway. Until, he meets Olivia, and prays that he’s finally found someone he can trust to break open the case…
… if he can just keep himself from breaking her.
There’s something about Ryder that shakes Olivia to her core, and drives her to do things she never would – resulting in a heated affair amidst combat ops and a dark conspiracy. Deeply mistrusting, it’s clear that he’s testing her at every turn, but things get too tense, too heated – and she finds herself dishonoring a hero.
Playing games with trust and secrecy, against all the rules, this pair are faced with the ultimate Catch-22.