HELP!!!! Third wheel 😡😡😡

The guy I'm talking to has this cousin who's always around. All I want to do is a have day with me and him to go to Santa Cruz. My guy says wtf what am I suppose to do with him. He stays home why does he have to go it's a couples trip. Everytime it's us three I feel like the got damn third wheel. I pay for him cuz he has no job. I have no problem with that but he is so disrespectful and expects me and my guy to do everything for him. How do I get my guy to come to Santa Cruz with me tomorrow and we will be back Saturday?😡