No, I definitely haven't. And your definitely not past your expiration date in Thailand either. Killing over a half dozen lizards, then writing a 400 word diatribe about it, and posting it on a public forum, is perfectly normal behavior.
A drunk, naked Brit, standing at his door, slurring his words in English, making a fool of himself and not making any sense. Just another quality tourist and another normal day in Thailand.
I've seen countless situations where Thai girls are dating 3-4 foreigners at once, all thinking they are the only one. It's like the fisherman who keeps 4 hooks with bait in the water at all times to increases their chances of catching the biggest fish. Thai women are almost always looking for the bigger, better deal. Especially a young one who is from humble beginnings. That is why they typically even bother with foreigners to begin with. Otherwise they would likely stick with their own kind and not have to deal with all the language and cultural differences and challenges. Sounds like your best option is to cut bait and chalk it up to experience. Even if she comes back to you at some point, it's quite possible she's not a girl of high integrity.
At first I thought, what a whacky, off-topic reply. Like someone with mental issues. But then I looked at the poster's name and I realized it was from none other than the Aussie Mop-Man who likes to cruise the Manila metro late at night looking for a homo-hookup. Enough said.