My friends

Me and my boyfriend have been dating for 8 months, and we want to have sex. We are both 15, but we both love each other a lot. I told my closest friends, and now they're all judging me, saying "you're too young to have sex" or "he'll just get you pregnant and leave" but me and my boyfriend have talked about it, and we'll use protection obviously, and he said that he will still love and support me with whatever happens, and if things do go wrong, he'll try to help me. I just don't want them to be mad at me if I do decide to have sex with him, and I don't know what to do.