
Not necessarily. I don’t think that’s a valid reason to assume you aren’t dating, which I imagine only happened because you never actually discussed whether you were dating or not. In that case, NTA cause communication is important. If you had discussed it and then assumed you weren’t dating because you were splitting then you are TA
nta bc if they thought it was a relationship without clearly communicating it w words ("i want to be in a relationship") then it should have been obvious through their actions, which it wasn't bc it's traditionally an expectation that the man pays and drives etc. If you want to b in a non traditional relationship that's not bad, but you need to communicate that