It seems a bit confusing especially since there is now two new ppl one of them being a baby (asian) Oscar. Although Gao Shi De could be the father seeing it stated he was gone for 2 years instead of the 2 months he stated he would be gone. I don't feel like the baby is his. There is a small scene in which you see medical bills and him seeming stressed as he is messaging Zhou Shu Yi. Later you see Zhou Shu Yi with luggage walking upon a path only to find his lover a baby and with a woman. He makes the assumption they're together and Gao Shi De has a new life with said woman & child. This mindset of Zhou Shu Yi  he leaves without being seen & without question ghosts Gao Shi De. Gao Shi De makes the decision to go back to meet Zhou Shu Yi  at least once. Thus setting us up for season two (fighting with no 2)