Saturday I went out with a bunch of my friends and my friend mike was there and we ended up flirting the whole night.My friend (we'll call him jake) jake was driving me and mike home. We stopped at this guys house and jake said we can use his car for a little 'us' time. So we ended up having some quick sex. And so getting our cloths back on we were talking like the good friends we usualy are and we both agreed we shouldn't tell anyone because its not their business and he came along to drive me home and we just said bye to each other with no hug or Nything. And then today I seen him and he didn't say Nything to me... has our relationship changed? And if so why?