Am I a bad person for falling in and out of love quickly?

When I start going out with girls, I do feel in love, but after a few weeks, I don't. It's been this way since I was 12, but I've only started to realise that I have a serious problem recently. Just two weeks ago, I met a girl from Indonesia on a random chat site. We started talking and we had a lot in common. I didn't fall in love immediately (because I know that you should only enter a relationship when you're ready, not when you're lonely), but after the first day she started telling me she had feelings for me. After confirming she wasn't a scammer, I kept talking to her. The next day (day 2), I started catching feelings myself. We both confessed, like little kids, and we started talking a lot longer. I confess, we had that silly puppy love, and I acted a little childish at times. Anyway, it's been two weeks, and today I've realised I don't feel any buzz, or any butterflies. I reply to her messages with a blank face and still heart and mind. I don't know if it's the distance, but I don't feel any connection anymore. I still text her like I love her, but I don't know if I do anymore. I feel really f*cking filthy keeping the illusion going, especially after telling her I would always love her (because that's how I felt) and saying we would see the world together. I don't know anymore, I just feel so lost and empty, I want to be the one to make her happy, but how can I if I don't love her anymore? Please don't hold back in your responses, I can take and deserve to take anything you throw at me. I just need someone's opinion on what's wrong with me and what I can do.

Am I a bad person for falling in and out of love quickly?
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