I am a very Christian person and setting up walls is totally against what I believe.
Not too sure what part of the religion teaches this. Can you please expand on what you mean by 'totally against what I believe'?
When I did wrong I want her to forgive me so bad
This is remorse. It is taking ownership of your actions, and taking actions to make your Betrayed Spouse (BS) feel safe with you again.
I just wanted to love her through it as Jesus would.
If you take out the reference of Jesus, and substitute it with 'a loving spouse'.... BTW, blind faith is just as dangerous as blind trust, or blind love. All are blind, and you can walk into a wall, or fall into a pit. Keep at least one eye open.
I may have made a mistake on trying to make it easy.
This is doing the 'Pick Me' dance. It is a dance done by quite a few BS, so don't sweat it. You were desperate to get her back, so you did what you thought was right, to 'woo' her back. Problem is, it is not the right thing to do. In fact, you should be doing what is referred to as the 180.
It seems like it is always poor her.
Another typical behaviour, but this time, in Wayward Spouses (WS). They make themselves out to be the victim, so that they will get he attention form the BS. This is sometimes done to confuse the BS, and guilt the BS into thinking it is the fault of the BS. This behaviour is not to be tolerated, as it will feed the ego of the WS, and destroy what little is left of the BS.
So how does one desire which path is next.
When did you find out? Very recently? If it is recent, then you don't have to make up your mind immediately. Your emotions are tumbling about, and the confused emotions can lead you to the incorrect path. You also should not wait for too long (e.g. 6mths). Some say 90days, but it could be sooner if you feel that you are able to think clearly.
Once you are able to think clearly, you will then have to observe how much she wants to be in the Marriage with you. Act deaf, but open your eyes. See what she does, and does it tie-in with what is coming out from her mouth. Lies are common currency of a WS, so be wary. Do not forgive too fast.
If your WS shows consistent actions that match her words of wanting to Reconcile, then it is up to you if you are able to accept it. Your clear thinking brain will be able to guide you then.
Life with her in pain or life without her in pain?
That will depend on you. What are you able to deal with? Has her issues been resolved? I do hope you realise that she does have issues, and she will need to see an Individual Counseler (IC) to deal with them. If they are not resolved, this may well happen again.... and again....
Will not go into whether porn is worse than cheating or not. This is not the issue. The issue is that she has cheated, and has she given you a written timeline of how it happened? Am sure that it was not just one time. She is possibly minimising the number of times and the intensity of her A.
She will need to open up her life 100% to you. Nothing is 'personal' anymore. All email accounts, social media, telecommunications are open season for you to check on, anytime you want, as often as you want. Any push-back on these will mean that she is still protecting/hiding something.