Sleepovers between guys and girls: weird?

Sam

My best friend is a guy and we hang out all the time. We have stayed out past 1am having a blast and we just hung out last night. We tell each other EVERYTHING and last night, he said that he loves me for the first time (he was scared) and if we started dating, literally nothing ours change between us. We are 14 and 15 BTW and he is gung-ho on abstinence for some pretty adorable reasons. He is the first person who is willing to deal with my (clinically diagnosed and I was encouraged to go to therapy) mental issues (anxiety and PTSD) and he is always there for me. Our parents on the other hand, don't get it exactly. We both want me to go to snowboarding with his family in February and him to come to the beach with me this summer (my stepmom lives at the beach) how can we convince our parents to let us and do you think a sleepover would be weird?