>>532905
I don't think so. Just by being friends for so long, I know them better than some of my IRL friends. I know how they respond to stuff, what to tell them, what to keep for myself, etc.
I think that meeting IRL accelerates the process of getting to know each other and building trust, but I don't think there are obstacles that are inherently impossible to overcome if the friendship is built through the internet.
That goes for friendship, obviously a romantic relationship is different since there has to be physical attraction and need for intimate stuff.