<human>: Can you summarize the given text in a few sentences?

So I met a girl on Christmas of this year, and we exchanged texts briefly to schedule a date when I got home from a NYE trip. After that we had a second date the following weekend, and then a third last night. We really seem to click.

However, and this is the case with any person I've had a relationship with, I worry that I'm only interested because they show interest in me. Does anyone else ever feel like that, even though you're 99.9% sure that you're actually interested in them? How do you get past that, and do you have any ideas as to what would cause that doubt?
<bot>: I worry that I'm only interested in a romantic relationship with someone because they show interest in me. Any ideas on how to keep that feeling in check?