She treats me nicely in person, but she won't let me sleep in her house (my bf lives with his parents), she makes a scene if my bf asks her if I can sleep over, she annoys the shit out of him when he comes over to sleep at my house and always makes petty comments like 'i guess you prefer her over your family'. 

Now I don't want to see her anymore and both her and my bf are upset. Am I the asshole??