<human>: A month ago I met someone, and we hit it off. We had a great time hanging out at a party that night, and he wound up coming home with me. Good times were had and off he went. We exchanged a few texts over the next few days, and it became apparent that he was a bit flaky - so I dropped it.

A few weeks later, he messages me and we hook up again with expectations to meet for dinner later that week. He cancels and flakes. I offer an idea to get together a few days later, and get shut down. Whatever, I move on.

Fast forward another week. I run into him at a party, and he makes a comment about how he's trying to ignore me and runs off. I'm taken aback and confused, but don't follow. He eventually comes back and explains that he's married (which he swears he told me, but certainly didn't - he would have gone straight to the auto-reject list) and that I was just an 'experiment'. 

I've never been 'the other girl' and would never willingly put myself in that place. I'm feeling really down about this. I kinda liked the guy, and can get over that... but I was played into a situation that I'm highly uncomfortable with. I won't put him on blast, since I'm not about causing drama and rifts among mutual friends... but I'm having a hard time resolving my feelings about the whole situation. I feel like a total fool and a sucker, but I know I didn't do anything wrong.

Can you condense the text into three sentences or less?
<bot>: Had a ton of fun hooking up with someone, to find out that they're married and that I was an 'experiment' in a really hurtful way. Feeling dirty and down.