This is my take on how Barney and Robin's friends react when they tell them about their engagement. I would love to thank special agent ali for helping me make this story it's best.

Warning: May contain mild spoilers for The Final Page part 2

Olivia x

Robin's POV:

"Come on, Lets get this over with" Barney said as he pulled me out the car to begin the walk up the stairs to Marshall and Lily apartment. I could hardly believe what we were about to tell them.

I mean, I could still hardly believe it myself. Last night, the love of my life, who I thought I had missed my last chance with, proposed to me at my favorite spot in all of New York.

Now we were going to tell our friends. How were they going to react? They didn't even think we were a couple, let alone engaged! Well, only one way to find out I thought as Barney knocked on the familiar brown door.

MPOV:

I opened the door to find Robin and surprise, surprise, Barney.

I thought Barney would be celebrating his engagement with Patrice, not here with Robin. What happened last night?

"We have something to tell you" Robin said. I wondered what it could be as I stepped aside to let them in.

"Sure go ahead" I said as they sat down on the sofa next to Lily who looked very curious as to what we were about to be told, I mean who wouldn't be?

"We're getting married" Barney eyes were immediately drawn to their entwined hands and sure enough perched on Robin's left hand was an engagement ring.

So many thoughts raced though my head like When? What? How? I mean I knew Robin still had feelings for Barney but what had happened last night.

They obviously saw the confused expression on my face so they started to explain all the events of the night before. Ted had apparently given on Robin and convinced her to go after Barney one last time. Apparently it was also Barney's plan because he then proposed to her on the roof of the WWN building. While I was happy for them I was also worried about how Ted would take the news that the girl he had spent all these years chasing was getting married to another guy. Lily could hardly contain her excitement as she practically bounced up and down on the sofa.
LPOV

I was still a bit hung over from last night, I knew I shouldn't of cracked out the mini bar but who wouldn't? but when Marshall opened the door all those thoughts faded as I saw Barney and Robin. I hadn't seen them since them since yesterday when Barney was still dating Patrice and Robin was, well getting over Barney being with Patrice.

What had happened last night? Why were they standing in our doorway holding hands and looking like a love struck Ted with one of his many 'soul mates' and 'the one'. Were Barney and Robin together again? No, it cant be, Barney closed the door on any future between them weeks ago, so it couldn't be that. Could it?

"We have something to tell you" Robin blurted out, obviously anxious as to how we would to react to the news they were about to tell us.

"Sure go ahead" Marshall said taking his place in the armchair, he was clearly as curious as me about this news they were about to tell us.

"We're getting married" Barney said and his eyes lit up with pure love as he gazed down at his fiancee next to him.

I looked at them and gestured for them to explain how the hell this had happened. I mean 1) up until now I thought Barney was dating Patrice 2) Robin and Barney were both fully anti marriage and now they were engaged.

For gods sake, sure I was happy for them. Two of my closest friends were getting married so why wouldn't I be happy for them? Thankfully, they started to explain everything. Like how Robin had found The Robin on the roof of the WWN building and Barney told her to turn over the piece of paper after she had yelled at him for tricking her.

"What did it say?" I said, really wanting to know what it said, maybe it was I love you or something else romantic.

"Hope she says yes, then he proposed and I said yes" Robin said.

Wow, I couldn't believe Barney and Robin were finally together after all these years of hidden feelings and failed relationships. They were perfect together and I was glad they were finally together.

RPOV

I was so relived that Lily and Marshall were happy for me and Barney, but something sat there, gnawing at the back of my mind. Would Barney still want to marry me after he found out I couldn't have kids?

Actually, I was worried about Ted. Out of everyone I ever dated, Ted Mosby was the one guy I didn't want to see hurt. He became my best friend and helped me live out my dreams. When those failed, he never failed to hold me tight and just listen to me. I couldn't believe after all those years of him chasing after me, he just gave me away to be with Barney. It worked too. I wonder if Ted is ready to hear all that though. I wondered where he was and how we were supposed to break all this to him.

Ted's reaction coming soon