<human>: So I went out with my boyfriend tonight and when we came home my little brother had some friends over.When we pull up my little brother comes out and his friends follow him.My boyfriend asks who all is here and I say idk some of my brother's friends I guess but he can walk me up so he see for himself if he wants to.He says no its ok so I get out of the car and walk up to my house.As he's pulling out of my driveway my large dog freaks out and bites one of my little brother's friends and the kid ends up bleeding.So as my bf is driving away he sees me leading the kid inside so I can clean the wounds he just got.I get the kid inside and get everything situated,I stop the bleeding clean the wound and put some gauze and tape on his arm all while his gf is standing by him the entire time.  
They leave to go home and I check my phone and see I have message from my bf that says to have fun at my party.I say wtf there was no party and he doesnt believe me.I tell him it was just my little brother's friends and they just left cause steven got bit by my dog.THEN he starts saying I like the guy and I tell him his gf was here and I Had to clean his wounds.He just said to have fun with my new bf and when I said t tell thay to his gf he tells me to leave him alone.  
Now did I do something wrong or is he just overreacting?

Condense the text into a few key points
<bot>: Bf thinks im throwing party.Little brother's friend gets bit by my dog and I dress the guy's wounds while his gf is by his side.Bf now thinks im cheating.