>>545308554
Saving someone's life doesn't have to be romantic. Both times, Surge is trying to best Sonic and having a melty. The first time, aboard Eggman's space station, where she suicidally tries to open them both to the vacuum of space and Sonic has to act swiftly. The second time, she is souped up on energy from the Master Emerald and having a meltdown from her resurfaced mental instability (which can be triggered by a flaw in her design from exposure to chaos energy), and her rash actions and drainage of the Master Emerald's power risk causing the destruction of Mobius because of the suddent descent of Angel Island towards the surface of the planet. Which can only be averted thanks to Sonic, Tails, Knuckles, Kit, and Eggman's last-minute push to prevent the island from crashing into the earth.
I'll have more specific details once I finish writing the historical plots but that's more or less the jist of it.