Advice.

I am 32M my W8de is 32F. We have 3 kids together ages 1, 3, and 6. Then she has two kids from a failed relationship 8 and 10. Two years ago I had filed for divorce due to false accusations of an affair that she would publicly post online that were Starting to damage my career as well as other people's. When I filed for the divorce I went on a sort of date with former Co worker. Nothing happened. We had lunch and exchanged a huh at the end. My wife also talked to multiple men during this time frame and posted borderline nude images online for attention. Thus the reason I felt the date wasn't that big of a deal. We worked out our differences since then. We've bought a 4 bedroom house, my wife is a stay at home mom. She is enrolled full time in online college classes and has already received one degree while working on another. I work 5, 12 hour shifts a week. I come home I make dinner I do the dishes and normally run a load of laundry through the machine. As well as sweep and mop weekly. My wife uses her sewing machine and plays in her flower bed. I thought everything is good. Out of nowhere yesterday she is laying on her back in the driveway staring at the sky. I see this through the window and run outside to check on her. She's ok. She says she is just thinking. I say ok...on what? She won't tell me. I go to go back in the house after asking a couple more times. She tells me she's thinking if we need a break. That I cheated on her. And that we might need to separate for a little bit. This confused the hell out of me. We talked and she said that we are good. But I don't know what the means anymore.. I'm pouring everything I have into this relationship.