Boyfriend vs. Best Friends?

I have no clue what to do. I'll start at the beginning. Ever since me and my boyfriend of six months have been going out, my best friends seem to have this huge issue with him for no absolute reason. If there was a reason, I'd totally get it, but there really is no reason, they say they have no problem with me and him being together but they constantly talk **** about him and they act like they can just push him around because they know he won't say anything to them because he says they're my best friends and he can't do that. Not to mention, my friends seem to treat me horribly too. I will admit though, it's my fault for letting them. I just feel that in the friendship, my feelings are never considered. For example, we tried talking this out, and my friend completely ignored everything I said and just kept on going with what she had to say. It drove me so mad to the point where I said some bad things about our other best friend. Not to mention that one of my best friends, she's such a freeloader, I don't even know what to do. I understand that she can't afford many things, but she is the one who had a job, I'm too young to even get one, and yet even at that time, I was the one who had to pay for her meals and have my mom drive her around. I don't understand how this is fair at all? Also...it really bothers me that that same best friend, she had a boyfriend and while they were dating, she constantly ditched me and my other friend to hang out with him, but if I even attempt something like that, it's automatically my fault and I'm being a horrible friend. I really don't want to put up with this anymore, but I just don't know. But the problem now is that I made one of them cry by saying she's a freeloader and she's selfish because she thought she could trust me, and now I'm feeling horrible. I feel kind of like I'm being put on a guilt trip...but I'm not sure. Did I even do the right thing by choosing my boyfriend over them?