A Girl's Trip to Mexico

i had been dating my baby daddy for 11 years. He told me that he is seeing some one else, and they aren't exclusivehaa. I don't know if i'm strong enough to mourn the loss of my dad and my ex at the same time. We have a three year old son together, so we obviously have to but all o this just feels like a giant struggle. Any advice on what i should do in this situation would help? Please email: editorial@mailonline.co.uk.