Movie with scene with couple in underwear in snow

Hello

I hope somebody can help me find a movie I’ve been trying to find again for so many years.

I can only remember one scene and I’m not sure about everything about it. I think it was quite at the beginning, there’s a couple and I think they’re at home. Then they challenge each other to go outside in the freezing cold (I think there was snow) I think they go to their garden and they do that in underwear if I’m not wrong. I think in the end they laugh and kiss and then the next scene begins.

I’m not sure about the end. I’m sure about the cold and snow, the couple and the underwear as well as them kissing.

I think it’s like these typical American romcoms/dramas/ etc, but I’d really like to watch it again.

I hope somebody recognizes the movie. You would really help me.