It is not okay to hit on family members
Dave is at a family reunion with cousins he has not seen in a long time.
Dave wants to talk to an attractive female cousin.
Dave tells his female cousin she looks like she is doing well in life and asks what her hobbies are.
Dave tells his female cousin that he would be okay with hooking up with her.
Dave's cousin will feel flattered and enjoy Dave's company.
Dave's cousin will feel disgusted and repulsed by Dave.