I think you only watched the eviction night interview. Unless you think that if you are good friends with people you are cheating. Because she has admitted to cheating in subsequent interviews as well as not denying she would pursue a relationship with Drew - even if she said she wanted to speak with her girlfriend.
One quote for you is this:
"Do you think when you finally see Drew again will this relationship continue or do you think that it was something of a story for Big Brother?"
"I've got no idea, so I don't think I'm going to have any idea about anything to do with that until he's out and by the looks of things he won't be out for a while so I'm just going to have to blindly stumble my way through this by myself I think for a bit"
Heidi tweeted a picture of Drew to Tully. Considering Heidi and Tully have been talking, I think that would be a very awkward thing to do if Tully didn't want anything.
Edit: OH and don't forget - she favourited a live stream post on twitter about Drew missing her.
Actually, I have seen the the Scoopla interview, heard multiple radio interviews, and I don't even like her - every time I've heard her say she wants to sort things out with Tahlia and thinks Drew is just a "friend". I am trying to be objective based on what I have seen and heard. I don't follow Twitter. I think she is stuck between a rock and a hard place, yep, she put herself there, but she seems willing to give herself time to work things out. I love you anyway [MENTION=24613]Reaper[/MENTION] - we won't know either way until Drew is out, and even then it probably won't become clear for several months