Im 18 and my mom won't let me spend the night at my Boyfriends house?

so im 18 in 4 months i will be 19 years old and me and my boyfriend have been dating since i was about 15. He recently moved a bit far and the only way i would be able to get a ride back and forth from his dad is if i spend the night, and i really want to. My mom has made it very clear that she does not like him, because we use to argue alot over little things but we have both matured and the last argument we had was over in 5 minutes, but of course she only sees the bad things. Im afraid to death to ask her if i can go because she is very old fashioned and she thinks its not right. He would come over here but we cant even go in my room WITH the door open and there is just a bad unconfortable tension in the room. So how do i tell her that i want to spend the night with him for the weekend, she always makes me feel like im a slut or a bad person when i even mention anything like this. should i just go even if she says no? i dont want to hurt he feelings.