<human>: We had been together for nearly two years up until a few days ago when I left her. Now I think that might have been the worst decision I ever made.

I was starting to get bored of doing things with her and found myself wanting to find excuses not to see her which at the time was what led to me leaving her. However I'm starting to think that I left her too soon.

The feelings of stress and boredom haven't gone away and now I have no one to talk about my feelings with and I miss her massively.

I'm worried that whatever I try now wont work out for us and that I have stupidly and quickly lost the only person I could talk to properly

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: left girlfriend of nearly 2 years due to 'boredom' think I did it too soon and have no idea where to go from here.