<human>: We've been together 5 months. We've been great together, but currently having our first major fight.

She has suggested a few times for us to go away on holiday later in the year, and I've been indifferent about the subject. I say "sure, lets see in a few months" or "ok, we can discuss some other time". It's happened on a couple different subjects. She gets pissed off at my noncommittal. Understandable. 

I feel she's in much deeper than me. She's told me that on our first date her heart melted and that I'm like no other boyfriend she's had. 
At the 3 month mark, after a night of hot drunken sex she blurted out "I want to have all your babies." That shocked me a bit, and it definitely was not what I was thinking at the time.
She expresses how she feels about me quite often, and I'm pretty slack on the return. I find a lot of it quite cheesy to be honest, but I feel bad I can't give her the same level of communication she's giving me. I've never been much of a relationship guy; always been comfortable in my own company.

She is an amazing girl, and I really do like her. She's funny, smart, loyal, attractive, and we can both be ourselves around each other, but I just don't have that strong feeling deep down in my gut.  I can barely fault her, so why don't I have overwhelming feelings for her?

I'm in two minds on what to do; On one hand she's an amazing person and I'm lucky to have her and I do really like her, so I should stay with her. On the other hand, I don't feel like I love her, and I sometimes wonder where this is going. It's not fair on her.
I feel like she KNOWS there's a future for us.

Obviously I'm going to talk to her about all this, I'm just taking a few days to get my thoughts together and reach out to others that may have been in a similar situation or have advice.

Can you give me the gist of the text in a nutshell?
<bot>: Girlfriend feels a lot stronger towards me than I do her, we're at a point where we need to decide whether to be together.