Rumple: "I'll Never EVER leave you" (Once Upon A Time S2E14)

Milah & Rumple's scene from OUAT S2E14: Manhattan Well, is it fairly possible that Baelfire was not Rumple's son all along seeing how disappointed Milah is about Rumple's homecoming? Could Milah be engage in another extramarital affair and was displeased that things doesn't go as planned? It could be plausible. What do the other oncers think? :D Do share with all the ONCERS out there! Feel free to request any past OUAT scenes. I'll try to give it to ya dearie. #oncers #OUATmoments #S2E14