do i tell her i like her?

im friends with this girl and everyone in our friend group ships us. we joke argue all the time and are very touchy. yes, i do have a crush on her and i think she does too but the thing is..shes straight. she calls me her wife, flirts with me over text but sometimes gets distant for a while. she also initaiates the flirty texts. i dont know if i should confess or not. what should i do?