Marco would have been happy to be nothing more than friends with Nico. The fact they were definitely working toward something more, and had seen a glimpse of the future in which they were together, was bonus. Because Marco liked Nico, liked spending time with him. And that was what mattered. Why would he pressure Nico into something more than he was ready and willing to give? That wouldn't benefit either of them.
"I'm happy to be here with you right now. I don't want you to be snowed in and alone out here."