<human>: Can you summarize the given text in a few sentences?

Been with my girlfriend since April. Love her with all my heart. She's always been here for me. In passing last night, she mentioned that something happened between her and one of her male friends our first week of being exclusive. Not sex. Not even kissing on the lips. But this is what happened.
She's always been a big cuddler (we both agreed that cuddling with other people was okay.) Our first week, her male friend had lost his job and she went over to his apartment for the night. They cuddled and kissed (just on the cheek or forehead - she made that clear to both me and him) and talked to make him feel better. This male friend did have feelings for her at the time, but he did make sure to respect her boundaries. 

I'm not exactly comfortable with her spending the night in his bed, especially given his feelings for her at the time, but is this considered "cheating?" It was the very first week in our relationship and there was no sex and only cheek-kissing. She made it clear to him that everything she was doing, she was doing with platonic intents. I believe her. I've even confirmed all this with the guy in question. She's generally a very affectionate person and she's always been 100% open and honest with me. She's never hid any texts or facebook messages from me. 

The question is, would you consider this particular situation cheating? I don't condone cheating and I agree that she may have toed the line a little with sleeping in his bed, but is it really bad enough to dump her? I love her with all my heart. I know Reddit's stance on cheating. At what point does something become cheating?
<bot>: Girlfriend of eight months slept over with a male friend our first week. I'm not exactly comfortable with it, but would hesitate to call it cheating. Is there such thing as a gray area?