What would you do?

I need some advice, or some perspective. Something.

First, this is how the story goes.

Boy  A and Girl A. Boy and Girl meet (5 long years ago), with the intention and love, sex and associated activities. Girl upon meeting finds she doesn't so much like Boy in person as the internet entity she'd come to know over the year, so Boy and Girl become friends as people sometimes do.

Years pass, Boy and Girl progress to become good and close friends. They continue and have partners on and off throughout the years, some work better than others. Along comes Girl C for Boy A. Boy spends time with Girl C and begins to neglect Girl A. They drift, and much to Girl A's dismay Boy A becomes infatuated with Girl C to an almost unhealthy point.Girl C  in the process of dating Boy A, gets to know Boy A's friends, one of which consist of  Boy B. Boy B and Girl A have had "relations" in the past.  Girl C, notices Boy B.  THIS IS THE SHITTER.

She leaves Boy A for Boy B (Boy A and B having been friends for years and years) and Boy A is heartbroken. And Girl A's heart breaks for him. Boy A and B also happen to be living in the same house might I add. Talk about torture. He fell pretty badly for the ho. Oh and by the way.Yes... total and utter fucking HO!!! Oh and don't think Boy B got off lightly either. Prick.

Anyhoo... time passes, the house they live in colapses like the perpetual fucking playing cards it was set up to be. Girl C and Boy B eventually break up due to the total and utter crapiness of the circumstances that brought them together. Karma.

Time passes, healing begins with an in ordinate amount of drinking. Drinking drinking and drinking. Girl A and Boy A become best friends. They've been there for each other for some of the worst of it... and then one drunken evening of Dashboard, and empty house, some fairly innocent flirting. And they kiss. Just a kiss.

But it begins something. Something they keep hidden at first.. something for just the two of them. They kiss and they kiss and they begin to love. To love AND to fall in love. The moment Girl A first noticed? She was watching him perform in a local club... he was singing and clutching the mic and he has his face hidden behind a mask but she couldn't take her eyes off him. It was just him and her in that room.  She was so proud to know in her heart that she was his.

2 more years and Girl A and Boy A are living together. He's released his first album to some pretty good reviews - all pretty positive and glowing. Second album comes along... he's been writing it for the past couple of years so she knew it'd be angsty to a degree. But she didn't see it coming. He wrote about her... Girl C. Girl C is something she cannot compete with. Girl A knows she was the first girl to have ever really returned his love... but love unrequited, y'know the ones that got away.... they're always the ones that make the songs. The one's that'll always have a piece of your heart. She thinks Girl C still holds his heart and she can't compete.

I can't compete. I heard the song and it was all for her. And how he hopes that one day he can forget her. Who can compete with songs about a heart that'll never really heal enough to be someone elses? He asked me to listen to the album it it's entirety. I know some of his other mates have heard bits and pieces of it, but I'm the first apart from himself to have heard it. And there it was nestled right in the thick of it. And I knew it. He knew I knew it. When it ended he looked at me and wanted me to say something... so I told him it was a good album. But he prodded me... he wanted more "constructive criticism"... but the words wouldn't come. I can't tell you how it feels to hear something like that.... I can say that it almost feels like the last two and half years have been a lie. I can tell you that I hate her for breaking his heart but I can tell you I hate him more for letting her take so much from him.

He knew I wouldn't say it so he said it... did I wanna hit him for that track.... lol. Hit him? I felt sick to the stomach. But I'm strong. I've always been strong. And he didn't expect me to react so I didn't but tell me how you deal with something like that. He reassures me he loves me... but it's the being second-best to a memory. It's just not something you can fight against.

We're supposed to be moving into a smaller place come July. We're in a shared house at the moment... so there's four of us. Come July it was just supposed to be us... no more stress, just us in our own place, doing our own thing. And now it feels like I'm the carrying the ghost of something I'm never going to be able to escape from along with me. The three of us.