Hi there! I'm really confused about this. My coursebook gives examples of both; used as a subject and as an object, but for me in both cases the relative pronoun is used as an object. Please tell me what you think. (subject) I like guys who aren't too serious. I like guys who have a good sense of humour. (object) I'd prefer someone (who/that) I can talk to easily. I'd prefer someone (who/that) I can have fun with. I notice you can't omit the relative pronoun in the first two examples so I suspect it has something to do with the fact that they're being used as subjects. Is it because they're the subject of the relative clause?