I mean I think there was just that Christmas celebration flash forward from what I recall and I think what it was showing was that they were still together and celebrating Christmas together. He Tian came to pick him up but ended up getting a lift by our orange hair guy while leaving his car blocking the road
And they went off to the orange hair dudes house.
I mean you can assume that they are grown adults that each have their own job.
He Tian is still rich as ever and the orange hair dude had moved out and was living alone. He was allowing He tian in and even accepted his Christmas gift which we see is a cheap toy ring from what I recall.
None of which suggest anything about separation other than the fact that they were full grown responsible adults. And that the orange dude was still hard worker and poor.
If there was another flash forward that I missed please let me know

what if He Tian leaves before they make up i’m going to SCREAM