Just say "YES"
You know how we all have those moments that change(d) us in many ways in life, how we look at things differently now, how we astonishingly function and act different (for the better) because of those moments? I think most times it's because of some people we come across. Your cynicism and skepticism go out the window and you know this new way of leading your life feels right, and you feel it with conviction. And how we are all looking (even unknowingly) for those people in life who make our lives better and our hearts full. Well, Nico is that person and he's so much more. In a world where trusting strangers is often considered as a foolish thing to do, Nico makes you believe otherwise.
Now, from a slightly less intense/corny lens: he's also jolly, social, enthusiastic, accepting, understanding, caring, polite, knowledgeable, cultured and super fun to be around.
If you are reading this, just say yes to him (his co-working trips), please! Keep your heart open and by the time you are saying arrivederci to him, you'd realise how right you were about this decision of yours.
PS - Just don't be too surprised if he kisses you on the cheek, time and again. đđ He's beautifully affectionate (being a heterosexual man, I can say that only about him).