What should I do??

Okay so my friends asked me to go to a play and I really didnt feel like it cause I knew I wouldn't have the patients for it so I said no and I said I can't go anyways cause I had to have dinner with my sister and dad cause my dad doesn't live me with so they think I lied and I told them I didn't and now they screwed me and replaced me with the girl who told my bf she liked him while we were dating and he said he likes her too so I broke up with him. Idk why they think I lied cause I didn't at all. So I guess we aren't friends anymore.