<human>: My girlfriend and I have a long past. 10 years actually on and off. Due to school, sports and military we have been on and off for not wanting to hold the other down long distance for years. She went away for college, I joined the military, somehow the stars aligned and bam, we were back together. My love for this woman is like nothing I have experienced, and in an entire year we haven't fought or argued but for one time. She is coaching a traveling volleyball team with someone that she had talked to in the past. They carpool for hours together, stay in the same hotel, and go out after games to the bars until they close. I have been trying very hard to be as trusting as I can, but my anxiety is through the roof. She's on her way back right now from a 4 day tournement weekend in Chicago and I want so badly just to confront or ask her if anything has happened between them. She has been very short with me the last two days and last night I asked her to just let me know what she was doing or when she got home and she replied "why". I would hate to lose this girl, but I feel like I just need the peace of knowing if anything has every happened between them. I feel like I won't be able to let it go without asking, but I don't know how to go about it.

Can you give me a shortened version of the text?
<bot>: Girlfriend is coaching with someone she use to date and I am suspicious that she has cheated and I want to ask her about it