Most Helpful Girl
Most Helpful Guy
Of course you want her back. You care for her. She is the mother of your child. The breakup is a unilateral decision and one you disagree with, not to mention it is fairly recent and unintelligible from your point of view. This, unfortunately, has likely influenced you to act upon your emotions.
Despite your protests, though, she prefers to move on from the life she had with you. Wherefore, I strongly you suggest you take a step, or two, in the opposite direction as her. Given this, if you are ever to have a relationship with her again, in my opinion, what you voice... and how you act during this stage of the breakup is highly consequential.
Having said that, considering her stance, I simply suggest you give her the necessary space she needs to miss you, and to decide if being with you is what she wants, while focusing on yourself of course. Elseways, you potentially stand the chance of pushing her further away.
Generally speaking, women lack respect and desire for guys who pursue and wait for them as if the guys, otherwise, have no life of their own without them.
On a side not, I must say you appear to be a bigger man than myself. I would not want to affiliate with an ex who slept with one of my friends directly following our breakup. No judging here.
Good luck to you.