What Do We Think Captain America Did About Frozen Captain America?
After defeating Thanos, Captain America is tasked with returning the Infinity Stones to their original points on the timeline. Once he's done so, he travels to 1945 and lives out his life as it was meant to be, in his own time, but in an alternate timeline he has created by arriving, with Sharon.
I think it is very, very safe to assume the following:
1. Upon returning to 1945, he immediately went to the Soviet Union and rescued Bucky before he could be turned into the Winter Soldier.
2. He spent the rest of his life being Captain America, and used what he'd learned in the future to prevent whatever tragedies he could.
3. After Peggy died, he returned to his original timeline, and made his way to the park bench where he reunites with his modern-day friends.
When he gets to 1945, he knows that he has created a split in the timeline, so there are now two of everyone and everything, including himself and his shield. He obviously went and found the shield. What did he do about the frozen Steve Rogers? Did he decide that he'd rather remain frozen? It's him, after all, so he should be the one to decide. He could have revived him in 1945 and let that version of himself live happily ever after with that version of Peggy, but we know he didn't. He could have revived him and sent him to his original timeline so the Avengers as we know them would have a young Captain America, but he didn't.
I believe it a near certainty that Cap did everything enumerated above, but what do we think he did about his frozen double?