Parents think I can't go out with friends unless my SO comes too

Really annoying when my parents think I can't go out with friends if My SO is not going with me, like ahh excuse me but he goes out with his friends I think I deserve to go out with my friends as well!! And they continue saying my relationship won't last if we keep doing things like this tf I have such an amazing relationship! And if sometimes we want to do our own thing that's fucking fine! It's not like an everyday thing 🙄