I choose Option 2. I don't want to risk falling through the ice as my partner did (Option 1), and I don't want to leave my partner there alone (Option 3), as it's highly unlikely they'll be able to get out without help.
If I lie down, the pressure per square foot on the ice will be minimal, so it's highly unlikely that the ice will break under me. I will be able to help my partner out of the water, probably in a minute or so.
(Note – If I happen to see any long thick branch lying around, I might grab that, and stick it out for my friend to grab onto.)
Once my partner is out, we'd strip off their clothes, which would turn to ice in a few minutes if we didn't, and hang them near the fire. I'd give my partner some of my clothing, then cover them in the aluminum foil blanket. Then I'd get the fire roaring, and dry the clothes.