<human>: My girlfriend and I have been together for a year and half... we both love each other but because of our age gap we are at different points in our life.  We talked a while ago about how we can see us getting married later in life, but one there is this one big gap in our relationship we cant seem to be able to communicate with each other.

All of our fights are because I either said or did something and she waits like two weeks after shes sat on this and once I pry it out of her and we talk about it we are all good. 

Well tonight presented a different scenario... I work the grave yard shift and so on days that I work we dont really get to see each other. I asked her if she wanted to come over and take a nap with me and she told me that she couldn't because she had too much to do. 

After I woke up from my nap I texted her and we were talking back and forth and it wasn't until several hours later when I got to work that she informed me she was 4 hours away on a spontaneous road trip with her friend, her friends boyfriend, and some guy that they all know but I do not know. (This information was told to me after I probed her about who all was going.)  and they were going to be back later this night.   

I told her that I wasn't trying to be over bearing or anything but next time shes out of town to at least let me know that she was going out of town. 

Then I said, " We really need to get better at communicating with each other."

and she replied ".....yeah I hear that way too often."

I explained how I thought it was a big gap in our relationship and she said that she get that and then wanted to talk about something else. 

I dont know what to do anymore... do I just abandon ship or how do I help us figure out how to start talking.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Girlfriend left town with out telling me... communication is the only real gap (beside age) in our relationship./ How do open up our relationship communication lines when it seems like she is not interested?