My girlfriend left me after getting pregnant during a threesome with me and another man. is it fair?

if you go back to my previous posts you will see that i had a threesome with my now ex-girlfriend and another man. she got pregnant during the threesome and it turns out that the baby is his she now she left me and is with him. do you think this is fair?

My girlfriend left me after getting pregnant during a threesome with me and another man. is it fair?
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