<human>: Can you provide a brief rundown of the text in within 3 sentences?

I've been together with my gf for about 6 months, and this is my first serious relationship. We have fun together and our personalities seem to match, but due to my lack of experience in relationships I feel I may be a bit lost with what this actually means for me.

She seems to have really strong emotions for me, but I hesitate. She sometimes would ask me if I loved her, and I wasn't sure. These days I just say yes, because I know it makes her sad otherwise... but in my head, I still don't know.

I usually don't form much of an emotional connection with people, but I do care about her and enjoy spending time with her more than with anyone else. I've tried to explain this to her but I'm not sure if she really understands it.

It's getting a bit stressful for me because I know she wants to have a fully committed relationship which would eventually lead to marriage, and I'm not really committed in that way at all and honestly the thought scares me. I do want to be with her, but even talking about living together makes me feel a bit uneasy. 

We've had some fights over this, and if I say something like maybe it would be better if we split because I can't commit to it like she wants to, she doesn't really want to do it and essentially blames me for wanting to "give up". But in general we don't have a lot of problems besides this.
<bot>: Not sure what to do with gf who wants serious commitment where I don't feel comfortable with it, especially as I'm unsure about what my feelings for her are. Yet, I don't want to lose her.