<human>: Provide a brief overview of the text.

Met this girl online. She's the sweetest, empathetic, kind girl I've met in a long time. She doesn't bog me down, control me, she's giving and understanding. The only problem is I'm losing interest in her quickly and don't know why. I've been single for three years and this is my first relationship since. 
Although we get along great, she's beginning to sense my unsure mind. The sex is so-so and she's a bad kisser, but that's not my problem. I am not shallow by any means, but I don't know really what do to cause I'm thinking of breaking it off, but fear I'll make a mistake if I do
Guh, I'm such a mess.
<bot>: super sweet girl comes in my life and does everything to try and make me happy, but I'm losing interest and don't know why. What do?