<human>: Can you condense the text into three sentences or less?

As I said we have been together for 3 years and four months and recently we broke up. We broke up because at her work she met a guy who she hung out with after work behind my back, what she told me is they ended up kissing and cuddling. BUT she came back to me the same night crying, and saying she was sorry, because she knows what she did was wrong.

I suppose my question is although I would take her back in a heart beat. Shes now at a point that shes confused and isnt sure if she loves this guy or wants to still be with me. I dont know myself if im okay with letting her trying to be with a guy who shes known for maybe a few months and hung out with ONCE (after work) and then take her back?
I need some serious advice please

shes the love of my life, and the best friend of mine, I wouldnt ever wanna lose her.
<bot>: 3 years 4 month relationship might end because shes sorting out feeling she may have for another guy, would I be a dumb for letting her sort them out and taking her back?