Some explain please

Can someone explain to me what happened at the end of the final episode I was very confused why were they broken up or is he dead like what's going on?. I felt like during the whole episodes of watching the series they were going somewhere but episode 10 felt like I was looking at a whole different drama. I mean I felt like this was a really good serious and all the characters were really well written I loved how they had like a different type of love and having to fight for it the stuff in the difficulties that some people do face in reality.