Search Results: no contact to get a guy back

This girl plays the hot-and-cold game to an extent I've never seen. We've been dating over a month, are sleeping together, and though we have not yet discussed exclusivity, it felt as recently as last week that might be where this is going.

When we're together, she exudes RED HOT interest. When I first made my move, she jumped on top of me and initiated sex. She grabs my arm or hand while walking, squeezing lovingly tight. She rubs my leg while sitting. She caresses my back. She suggests things we should do together. She calls me pet names like "love" or "honey". She's joked about me making a great husband. And she acts incredibly self conscious and vulnerable around me, apologizing about her looks or weight (even though she has absolutely NO reason to feel that way; she's damn sexy). But...

When we're not together she sometimes goes ICE COLD and maddeningly non-responsive. A recent "What are you up to this weekend?" took her all bloody day to respond to. And even then, I got more or less a non-responsive deferral to chat later.

It is possible there is another guy. We met on an app; I paused my account recently (which I wish I hadn't because I didn't know it notifies her of that...) due to work blowing up and wanting to focus on potentially moving this forward. She's still on it and who knows how active she's been.

Right now the ball is in her court. And while I'm tempted to just call her, I feel that is a bad move. I may be smitten, but she should treat me fairly and with respect. She can't just blow me off and expect me to chase. If she misses me, she knows what to do. My instinct is to not contact her until she reaches out. If I don't hear from her for 2-3 days, perhaps I can be more direct. We are past the stage where ghosting is acceptable.

Any thoughts on her motivations here, and what to do?