<human>: Can you give me a shortened version of the text?

My GF and I have been together since we were 16 (6 years ago) and for the first two years the relationship was great. We had a good sex life, lots of romance, went on dates, and she seemed really into me.

Of course the "honeymoon" phase always ends, and when it did we maintained a good amount of romance and still had a decent sex life. 

Now, 6 years into the relationship, there seems to be NO romance left (and there hasn't been for a year or more) and our sex life is **dead**. She says she still loves me, and I feel like I do still love her, but honestly I've been trying to get the spark back for a year now and it's clear she's can't/won't try to improve the relationship with me. I really don't want to end it like this, but it feels like I have to if I want to be happy. The problem is that I do not want to hurt her.

She's very antisocial and I'm one of the very few people she actually socializes with. I'm afraid that if I do leave, she will just end up alone. I do still care for her and I don't want to do that to her.

To complicate things, I've met a girl at work I'm really falling for...

Relationships are hard. Pls halp.
<bot>: GF of 6 years has become rather uninterested in the relationship. How do I break up with her without really hurting her?