<human>: I've been with my current girlfriend for about 15 months and have come to the conclusion that I don't see a long term future together. She's a nice person, but I find myself growing increasingly unhappy. I could go into the details, but for purposes of this post, I've decided to end it, hopefully amicably. 

The triggering event occurred over Thanksgiving and since then we've not spoken a lot, just a little bit over text. I haven't seen her since Friday morning. This was by design as she went home for the holiday weekend. Today, we haven't texted much at all. She probably figures something is up. I don't plan to break up with her over phone or text, but I'm about to go out of state for work for a few days and won't be back until Thursday night. I don't want to be out of contact until then as I don't think that's very fair to her, but I don't really want to act like everything is ok until then and blindside her later this week. I also figure telling her that we need to talk when I get back is setting myself up to having the conversation over the phone. I'm not trying to put off telling her, but I don't really have an opportunity to speak with her until later this week. 

Any advice?

Give me the gist of the text in a nutshell
<bot>: Plan to break-up with girlfriend, hopefully amicably. Not able to do so until later. What do I do about interim communication?