we're newlyweds; so this was a problem before we got married. he just bought a boat with his cousin (which i was against from the beginning for financial reasons and because his cousin is irresponsible). now he thinks that he needs to use it once a week. first, we can't afford it. second, he has epilepsy. they insist on going at 3 in the morning, but he has seizures when he doesn't get enough sleep. therefore, i don't sleep the night before and the night after because i'm worried about him having a seizure. his cousin is doesn't care about his health. so, he gets my husband amped up, and there's no turning back then. we fight every time he asks if he can go, and it's making me resent him and his hobby (which i used to like). oh and i can't go with him, i'm pregnant.
how do i get him to understand?