I feel betrayed ...

kiki

So it’s this boy I like & my cousin texted him to put me on && like we started talking than she always been saying slick comments like oh “he’s cute he look good with his braids in” & I been letting certain stuff slide but now she’s just ice skating & the other night she called me saying “he asked me for a Uber” and he’s not the type to just ask anybody for things so I was like mhm and than I was like either she’s lying or they’re talking behind my back which is mad CRUDDI . And I asked him 1st because all she do is lie & basically he said he did ask her & I haven’t texted him back so idk what to do or how to confront her about the situation.