My best friends parents talk about me behind my back

so me and her have been friends for about a year now and ive been to her house and hung out with her and her parents on multiple occasions her dad was friends with my dad at one time my dad now dead her dad felt bad and decided to take on the role as a father figure a few months ago i dated this guy and i did bad things i shouldn't have over the summer i had snuck him over multiple times and i even had her brother take me somewhere i wasn't supposed to be and my parents found out about that but im scared of them finding out about the sneaking my ex in well i told my best friends dad because he's wanted to be in my life and i thought i could trust him until i told him my ex had made me uncomfortable in some of the stuff we did and he pressured me into other things we did apparently her dad hangs out at a bar with other people that were friends with my dad and some of them are still friends with my mom and he's told people about my ex being a bad guy and he even went and confronted my ex months after the incident i wanted to leave it all in the past because i knew my ex could tell people that go to school with me who's parents are friends with my mom and it freaked me out so i apologized to my ex through a mutual friend and he apologized to but recently ive hung out with my best friend for the first time in a while she told me that her parents were being awful towards her especially her mom (she's adopted) she wants to go with her bio parents but they get mad at her for talking to them her "mom" has been trying to force her to do pageants because she wants her to be exactly like her real daughter even though her real daughter doesn't even come around her anymore my best friends getting lawyers against her adopted parents her "dad" used to take her side when it came to arguments except recently he's been two faced and even told her that he doesn't think im as innocent as i portray myself to be just because i apologized to my ex he wants me to take him to court because another girl had got him arrested for an s/a charge but i don't want anything to do with it im in a good relationship now and i don't want my parents involved in the whole thing i don't wanna tell them until im 18 just because then they cant legally do anything to me but her adopted parents have had something rude to say about all of our friends and her dad always told me he was glad we were friends but yet now he's making side comments about me to her and not to my face he talks bad about her any chance he gets when we text (yes we do text because he wanted to be in my life because i was struggling with my mental health for a while) her "mom" told her she doesn't know why my best friend talks to me still because it seems i don't want anything to do with the friendship just because i don't reach out all the time like i used to I'm in a relationship now i really hate talking alot on the phone it just gets annoying her moms also made snappy remarks about her to me before as well there was a time i was helping them move out of their old house and she went to run to her dad and her mom said i didn't know she could run she almost failed p.e cause shes lazy i said well there's also classes and paper work you have to do for that class so i can see why it'd be difficult her mom realized i was gonna take my best friends side no matter what and stopped arguing she's super against her being gay and she doesn't want her to dye her hair because of pageants truthfully i think she just wants her to look like her bio daughter and doesn't want her to have her own personality all my other friends parents have always loved me so i don't understand why her parents hate me so much but i have a feeling her dad tells my dads old buddies things about me that aren't even true i don't know what to do i feel like them saying were here for you was a way for them to gather dirt on me so they could blackmail me and when my best friend takes them to court they're gonna drag me down as well or they'll try to make me how they treated her