<human>: Let me start out by saying that I am in the best relationship of my life. We've been dating for a little over 6 months, and everything is going really great and I truly feel like I could spend the rest of my life with her. She's smart, funny, beautiful, has a great family, the whole works. Why, you might ask, am I posting here then?

It's kind of hard to say. Sometimes, I think about how I really wouldn't care if we broke up and I wasn't in a relationship. Like I could be just as happy coming home from work, playing video games and smoking weed all night by myself every day. Mind you, I don't feel like this all the time, or even a majority of the time, but I do think about it more often than I am comfortable with.

To give a little backstory, I was never good with relationships. I never had a "real" girlfriend before this, so I became quite comfortable being alone. Being by myself is not something that bothers me at all--a lot of times, I would plan vacation time and just stay by myself at the house. I would tell people at work that I was going out of town to see family at Thanksgiving etc, then just stay home. I never had any depression or anything, I just liked being alone.

The issue is not that I am never away from my girlfriend. I travel for work at least once or twice a month, so I am away a fair amount. My girlfriend doesn't have any problems with me playing video games when we're together. I smoke weed less now that I am with her, but she is comfortable with it on occasion so it's not that I am being denied the things that I had before.

I love my girlfriend and want to be with her. What is causing these thoughts that I am having?

Can you summarize the given text in a few sentences?
<bot>: In a great relationship, things couldn't be better, but yet I sometimes think that I wouldn't care at all if things just ended and I was by myself and it makes me uncomfortable to think this way.