<human>: Here's the story:
The relationship with my girlfriend has currently some major problems. I almost broke up because of that but talked to her 2 days after that, and we both agreed to seriously try to overcome these things. I am not sure this will work, but as long as I have some hope I don't see myself giving up. We wanted to go on vacation soo but we havent planed anything specific and its not certain she'll even have time for that.
 
 
So yesterday I met with a girl which I hadn't seen in quite a while, and which I spent much time in the first place. So we had a great time, and I really enjoyed the day, and at some point she was rambling about making a trip via train later this year. She mentioned I could come with her, but sounded like she wasnt expecting me to want that. I didn't really say anything about it, but today I reallized that this sounds great. Now, I don't know if I should ask her if she'd really want to do that, or if I should talk to my girlfriend and how to react if my gf says something like "wtf. dude no way.". My gf never met her but knows she exists (of course the other girl knows that I have a girlfriend)

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Female friend would consider awesome trip with me later this year. Meanwhile relationship is in deep shit, but I keep trying to fix it. What to do?