Relationship advice?

So me and my boyfriend have been dating for 11 months now.For the past 10 months his best friend has been awful to me.He tried convincing my boyfriend that I fake having an anxiety disorder to manipulate him,that I'm ungrateful to him,and that I don't treat him right.None of these things are true.He also thinks I basically abuse him and at any social gathering he'll mention the "unbalance" in our relationship(my boyfriend is very kind and likes to help with little things more than me).During a break his friend thought we broke up and decided to tell my boyfriend that I didn't participate in the relationship and that it was all one-sided.Everytime I've gotten upset with him trying to be in our relationship he's responded by calling me names and my boyfriend doesn't defend me most of the time.After all of this I've refused to go anywhere near his friend,however they still spend alot of time together.I asked him to stop being friends with someone who was so awful to the girl he loves and he thinks I'm being unreasonable.They've been friends for a few years however I'm not comfortable with him being friends with someone who has attacked me so many times.If this was vice versa I would not be friends with them anymore.Sorry for how long this is.I was hoping for an input or opinions?Am I being unreasonable?