<human>: We've been together for more than 3 years, living separately, and lately I feel like meeting her is a chore. Sometimes I try to avoid meeting with her. This sounds bad, and the first thing in everyone's mind is to just end it.

I care for this girl a lot. We have lots of common things, she understands me very well, and I like her personality a lot, she's unique in a very good way. I can imagine a future together with her.

The times we actively do something are good, but when we're alone, and try to spend some quality time, it gets a bit dry. We can't keep the conversation flowing naturally, and the atmosphere is a bit tense. I think this is the reason I try to avoid her, because we're not having genuine fun together. We're both introvert, and nervous type. The signs say she's not right for me. She agrees with the signs :(.

I can't leave her. I'd be stupid to let someone with these qualities go, she's the best thing that ever happened to me :(.

I need someone to open my eyes... am I just holding on for something that was never meant to be? Would this be better with someone else, regardless of my nature?

Can you condense the text into a few key points?
<bot>: relationship goes stale, not always having a good time together. should I let go, with the risk of regretting losing an angel?