<human>: Can you condense the text into a few key points?

We had our second talk last night where she says she's feeling inadequate for me. I've been in a weird mood the past weeks where I'm struggling to be happy and she can obviously notice. We spend pretty much all the time together so I don't know if my mood is generally dampened or if we're just not a good mix anymore. I keep wondering if I would have more fun without her and if there's someone better out there for me. On the flipside, she's a great and unique person, and I'm afraid of tossing a 9 months old relationship out the window causing me to regret it. This is for the both of us the first serious relationship we have.

She's a lovely person that it's difficult not to like. We do however have some differences that's at times difficult. Our personalities and backgrounds are very different (we're from different sides of the world).

After having been poked at for some time in trying to figuring out what's wrong, I ended up saying that I'm not sure if I love her anymore. I know this was a turning point and she's asking me to figure it out quickly. We're spending the day apart and we're meeting tonight. I'm struggling to figure out what to do and how to think about it.

I want a girlfriend that understands me and makes me happy, and she deserves someone that fully appreciates her. That speaks to breaking up. However, I'm currently not even understanding myself and don't know why I'm so passive even when we do otherwise fun stuff. We've had a mostly great relationship so far and I'm afraid of losing something good. We've met each others families and we've previously envisioned a future together.
<bot>: My mood hasn't been the best recently – I'm wondering if it's the relationship that is the issue, and my girlfriend is feeling inadequate (leaving me feeling selfish/worse). How can I tackle these issues?