I'm going to take a shot in the dark and guess that Chloe read the situation differently than you did. Which happens, no one is perfect. But I imagine at this point, she's feeling very hurt and betrayed by what she thinks was an intentional indiscretion on your part, which wouldn't be an unfair assumption if she also believed you were dating, and all that dating implies. Where it was wrong for her to assume, I'd also say it's wrong to act as if actions don't matter. You must know how she feels about you, and I think to let her assume it's something more than you want it to be is also hurtful. If that's the case.