What Should I Do?

Should i back out now? 

Can i be selfish and wanting all this?
Even though i know someone else is hurt because of what i am doing.

Even if i knew that she still loves him and he still loves her.
And im stuck in the middle of no where.

What should i do?

Should i run away? 
After all that ive build
And just let them be happy together?

Or should i just stay?
And let us be happy together? 

I dont know 
Even if i ran away,
Would things get better for them?

Thats not my call to make.
I dont want to stand in between them
But i also dont want to let him go.

What should i do?
For some reason 
I felt like im the bad guy here
Is it my fault?
For suddenly showing up in ur life?

Should i back out now?
I dont want to
Because im happy now.
And its been a while since im happy happy.

What would u do if u were in my shoes?
Would u run far far away for other people's happiness?
Or would u stay and fight for what u want?