Help me

I Need some help. My boyfriend and I have been together for almost a year now. While he’s amazing and sweet to me sometimes I feel like I’m not dating a man. When we first started dating I was introduced to his roommate and friends. The one specific roommate called me names. While My boyfriend sat there and said absolutely nothing. All the friends would laugh. And they declared they didn’t like me because of the way I stormed out. My boyfriend Didn’t defend me. I leave the living room and rush to balcony and cry and my boyfriend follows. It was humiliating and embarrassing that my own boyfriend wouldn’t defend me or stand up to his roommate for me and friends. This was the first month of meeting. The roommate apologizes days later on ig. As the months go on the friends don’t like me. We all went to a baseball game and they didn’t even say hi. Only 2 out of 6 were nice and conversed with me. As time goes on that roommate picks here and there again boyfriend says absolutely nothing. Because he does it slick and I speak back. Until just yesterday. I call my boyfriend on FaceTime just to have a funny convo because I have a bag on my head and the roommate goes who’s that. My boyfriend goes Jessica. The roommate goes why the f___k is she calling. My boyfriend goes idk dude. Then the roommate goes dumb b___h. I’m like what? What did he say? My boyfriend goes that’s not nice. I’m like you’re a fat b__h. Then he goes hiii me Jessica. Didn’t make it clear that he didn’t just curse me out. Showing me the comment was directed towards me. My boyfriend then goes it wasn’t towards you it was towards the worker behind us because she was blocking the parking. I know he was lying because why not make this clear when I insulted the roommate ? This makes me think he’s lying. I never resort to calling names or cursing at anyone but I’m tired of being disrespected and no one defending me and having to defend for myself. He says it a couple of times and it hurts my feelings that I can’t even be respected or let alone defended or stood up for. Rather than get “that’s not nice” there was no sense of protection from my boyfriend. I felt like the comment didn’t make me feel safe or be able to confide in my boyfriend when I’m ever in trouble. He has always been like this throughout the whole year. He has always told me he never says anything to him because he knows that roommate tries to one up him. That roommate has thrown sicssors at my bf face. While my bf had the option to leave the apartment because his lease was up he chose to stay. That roommate always picks on him and calls him names leaves the sink strain in his room. And my boyfriend does absolutely nothing back. But when it comes to my boyfriend with me he raises his voice and yells at me. But can’t even do that to his roommate that curses me out and disrespects me. Am I over reacting? If I am I’d love to know from someone point view..