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

Relationship background info: been dating for nearly four years, first two years were long-distance. I moved from NY to SoCal to be with her. 

My girlfriend and I were invited to a wedding for an old friend of hers. They were best friends throughout high school, but then had a falling out and didn't reconnect until about a year ago. Either way, they barely see each other. I have never met her friend or anyone else who will be attending the wedding. I know at least a handful of the people who will be there are people that my girlfriend knows from high school but hasn't talked to in a while. She said she would really like it if I attended so she could introduce me to people and such. The problem is, I really don't want to go. The idea of a wedding, especially for two strangers, does not appeal to me at all. I don't drink, I don't like dancing, and big social situations where I don't know anyone is not my forte. I'm a hardcore introvert and will surely be exhausted by the end of the night. 

Further, the wedding requires us to travel from SoCal up to San Jose. My girlfriend said she will pay for my travel expenses. We initially got into a fight when I told her I didn't want to go, but she eventually came around and told me I didn't have to. But she still wants me to and I'm really torn as to whether I should just bite the bullet and go or stay home. On the one hand, I don't think I'll have much fun and it doesn't seem like an event I should feel obligated to attend at all. On the other hand, I know I'm going to feel guilty if I stay home and she's there by herself without her boyfriend. So Reddit, what say you? Should I feel obligated to go or is it not a big deal?
<bot>: girlfriend wants me to travel to attend wedding for people I've never met, I don't want to go, but feel guilty if I say no. What should I do?