Akogare no Onna Joushi ga, Aibeya Shucchou no Tonari no Bed de Zetsurin Otoko ni Netorarete Iru

The main character, due to a strange turn of events, is forced to move in with his boss. He is secretly in love with her, so he perceived the move as a blessing from above. However, he soon realized that this was his punishment. Because his boss loves to have sex and does it every time with an unknown man while the hero sleeps...