Cheating ex-girlfriend wants to meet up with me over drinks.

We haven't seen each other since I moved out. I'll be honest here, a part of me wants to meet up with her and fucking jump her bones! It's been weeks since I've experienced any form of physical contact ugh. I tried coming up with an excuse to avoid the conversation but she called me out on my lie.

I do acknowledge that seeing her over drinks later tonight would be a big mistake and I don't plan on going through with it.

How do I put her down gently?