The seriousness of their relationship has bounced around over the years. He loved her, but also they apparently didn't know each other's names -- but I that has since been retconned. She wasn't his only wartime love, and I think they had a bit of a Vegas agreement in the sense that they boned while they were in the same place but were free agents otherwise? During Brubaker's run she was with the Codename: Bravo guy for a bit while seeing Steve too, right?
All of that to say: It wasn't like the MCU.
I remember coming out of Endgame with my sister and she asked me if there were any comics that had Steve and Peggy as a couple. Had to break it to her that they were never shown to be merely as close as the movies portrayed and I find it funny when the comics try so hard to
Is the Captain America running around these days the cosmic cube copy? That's kinda weird but cool.
Perhaps, yeah.
HYDRA-Cap was the Cosmic Cube-created copy, if I recall correctly. That said, the real Steve Rogers's consciousness was stored inside Kobik and then restored to the material plane in a recreated body, so . . .
The spider is always on the hunt.
Kinda surprised that Steve didn't ask Emma to implant something in their minds in case MODOC tried to screw with them again.