I still can’t get my head around all this

We both were seeing a different man.
She was told she’d always been the “one”
What does that make me a two or maybe three?
Either way he never said that to me.
There was never talk of holiday plans
Marriage or Prams
I’m told the plans were for two
Yet I didn’t have a clue.
All of this he chose to hide
And I was taken for a ride
I still can’t decide what’s right and wrong
But the evidence shows that the feelings were strong.
If she didn’t end it and be so mean
I think he may be just as keen.
Asking to see her more
Sickens me right through the core
I don’t know if I can take any more