<human>: Hi I am using a throwaway as my gf uses reddit. 
I've been with her for 12 years. Been living together for 5 years. Over the last 2 years I feel I'm not in love with her. 
I enjoy cuddling with her, and enjoy coming home to her. But I am not sure if I still want to be with her, Due to her work we can do a while with out seeing each other, then we could see each other a lot over a few days.
I find she annoys me, we don't share many activity's together and we dont realy talk on the same level. I enjoy talking about technical things, world events etc. She just sits and agrees with me, or sits on her phone. 

I feel that I have to stay here as I have borrowed money from her over the years, and she is really nice to me. She helps me, looks after me if I am ill etc, and I do care for her. 

To make matters harder for me, I met another girl online, I've not cheated with anyone and the other girl knows I am in a relationship I've only ever spoken to her online and on the phone over the last 4 weeks. But she makes me feel more alive, she has more ambition and drive. I feel I click with her. She is not trying to split me up, but I don't know if this is making me feel that the grass is greener on the other side.  

I'm not sure what todo, I don't know what I feel for who, I don't really know what I want to ask, I don't have anyone else to ask for advice apart from Reddit

Could you distill the essence of the text into 1-3 sentences?
<bot>: Been with partner for a long time. Not sure if I feel the same for her, I don't know what todo. No on to turn to