Coupling assembly, comprising a female quick connector and a male member for insertion into the quick connector, wherein the quick connector comprises a main body, wherein the main body has a coupling section for insertion of the male member into the main body, wherein the main body comprises a hose section for connection with a hose or pipe, wherein the coupling section is connected to the hose section via a through bore of the main body, wherein the main body comprises a face end which is allocated to the coupling section, wherein the male member has a tip for insertion into the main body, a wall defining an inner surface and an outer surface, and a latching element on the outer surface of the wall, wherein the male member comprises a sealing section between the latching element and the tip, wherein the male member has a longitudinal axis which defines an axial, a radial and a circumferential direction of the coupling assembly and the coupling section, respectively, wherein the quick connector comprises a retainer, wherein the retainer has at least two retaining elements for interacting with the latching element of the male member for retaining the male member within the main body, wherein the retainer comprises at least two actuating segments for actuating the retainer for unlatching the latching element and releasing the male member from the main body, wherein the male member is in a latching position when the latching element is latched onto the at least two retaining elements, wherein the male member is in a pre-latching position when the retaining elements overlap axially with the sealing section of the male member, wherein the quick connector has a verifier, wherein the verifier is axially movable along a verification path, wherein the verification path comprises at least one locking position and at least one releasing position, wherein the verifier in axial direction is closer to the retainer in the locking position than in the releasing position, wherein the verifier is kept by the coupling assembly in the locking position when the male member is in the latching position, wherein the verifier in the locking position limits a movement of a section of the retainer in radial direction, so that the retainer is not actuatable in the locking position of the verifier but actuatable in the releasing position of the verifier, wherein the coupling assembly is constructed so that the verifier is not expanded in radial direction during the whole insertion process of the male member into the main body, wherein the verifier has at least one covering section which covers a covered section of the retainer in radial direction when the verifier is in the locking position, characterised in that the coupling assembly is constructed so that, when the actuating segments of the retainer are pressed, both actuating segments move radially inward, wherein this causes a radial movement of the retaining elements in radial outward direction for disengaging with the latching element of the male member, thereby characterizing a tensioned state of the retainer. wherein the male member has a tip for insertion into the main body, a wall defining an inner surface and an outer surface, and a latching element on the outer surface of the wall, wherein the male member comprises a sealing section between the latching element and the tip, wherein the male member has a longitudinal axis which defines an axial, a radial and a circumferential direction of the coupling assembly and the coupling section, respectively, wherein the quick connector comprises a retainer, wherein the retainer has at least two retaining elements for interacting with the latching element of the male member for retaining the male member within the main body, wherein the retainer comprises at least two actuating segments for actuating the retainer for unlatching the latching element and releasing the male member from the main body, wherein the male member is in a latching position when the latching element is latched onto the at least two retaining elements, wherein the male member is in a pre-latching position when the retaining elements overlap axially with the sealing section of the male member, wherein the quick connector has a verifier, wherein the verifier is axially movable along a verification path, wherein the verification path comprises at least one locking position and at least one releasing position, wherein the verifier in axial direction is closer to the retainer in the locking position than in the releasing position, wherein the verifier is kept by the coupling assembly in the locking position when the male member is in the latching position, wherein the verifier in the locking position limits a movement of a section of the retainer in radial direction, so that the retainer is not actuatable in the locking position of the verifier but actuatable in the releasing position of the verifier, wherein the coupling assembly is constructed so that the verifier is not expanded in radial direction during the whole insertion process of the male member into the main body, wherein the verifier has at least one covering section which covers a covered section of the retainer in radial direction when the verifier is in the locking position, characterised in that the coupling assembly is constructed so that, when the actuating segments of the retainer are pressed, both actuating segments move radially inward, wherein this causes a radial movement of the retaining elements in radial outward direction for disengaging with the latching element of the male member, thereby characterizing a tensioned state of the retainer.