Why would a guy say I never meant anything to him when clearly I did?

Anonymous
So I am living abroad, and I met this guy and had a one night stand which I thought would go nowhere beyond that one great night, because he was also international and going home in three days. We exchanged numbers as like an appreciation type thing but never used them. Two weeks later he finds me in the same backpacker bar and has a giant life confessional to me that he is actually a local and had made up the being international thing because he was meeting up with friends and didn't want to be the only local. I didn't mind at all, but I also didn't hook up with him that night because I needed to process it all. We ended up texting massive d&m convos for the next couple of days before I just didn't text him to initiate it one morning because I didn't want to bother him. The next time I saw him, he was clearly crazy about me and was sad that I had stopped texting him (hello he had the ability to text too but I digress) we ended up having longer talks and going back to his... He was clearly really into me and loaned me clothes so I didn't have to do the walk of shame in my previous nights attire. I told him I would give them to his best friend (who already knew we ha hooked up) because he happened to work in a shop next to where I live. When I said that he got all puppy like and said "no just give them to me when I see you again" to which I got all smiley and said "really? You want to see me again." And he said "definitely". Mean while some things happened back at home and I had to book a flight home in about a week. I texted him to ask him if we could meet up sometime soon because I had to leave he responded with "why I only met you twice" to which I was just like never mind then I'm going home so it really doesn't matter all that much and then he tells me he got a new girlfriend and that we just had casual sex and all of a sudden I think I mean something to him... I just want to know why a guy would say something like that when he tried so hard to make himself mean something to me and I'm going home anyway... Wouldn't it have just been easier to feign busyness until I left? I'm not really upset about loosing him (since I knew that was coming anyway) as I am just plain hurt...
Why would a guy say I never meant anything to him when clearly I did?
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