<human>: Give me the gist of the text in a nutshell

Hi reddit.

My girlfriend and I cohabitate. Our relationship is, for the most part, wonderful.

A big difference is that she is an extrovert, has tons and tons of friends, many of whom live out of town, while I am more introverted, have a select group of close friends and that's it. Also: she loves weddings; I hate weddings. 

Three of her friends are getting married this summer. I have briefly met one of the couples, while I don't even think I've ever seen pictures of the other two couples (needless to say, these aren't her closest friends.)  All three weddings are out of town. Two are about a 1.5 hour drive, the other is about a 2.5 hour drive.  

I have agreed to the two closer weddings. One we'll be spending the night, the other we'll drive back (I don't drink much so it's not an issue.) 

The third one I am balking it.  Quite frankly I don't want to spend an entire weekend on going to a wedding of someone I do not know and will probably never see again. I will also not know anyone at this wedding. By balking at it, I have upset my GF. 

I realize that in any relationship, there has to be give and take. And there is lots of give and take in ours. But am I taking too much if I don't go to one of these weddings?
<bot>: happy to go to 2/3 out of town weddings, the other one I don't want to go to. This has led to much grief.