Hm, I’ve only been disappointed when taking back a cheater. Also, having such a huge issue within the first few months would make me think that it’s not worth my time and effort to invest even more into this. But you are not me and he isn’t the guys I dated.

Maybe have a look at the sub r/AsOneAfterInfidelity. You’ll find lots of resources on what is important for reconciliation there. Plus lots of people who are actively going through the process or have done so in the past/are considering it.

What’s definitely important to know is why he did it in the first place. Without that knowledge, who’s to say it won’t happen again? I’d also request to have an open device policy for both of you. Absolute transparency about who you both are spending time with and so on.. Also very important, if you decide on reconciliation you both need patience, especially him. Building trust back up properly takes a long time, so he needs to be understanding of occasional doubts or insecurities you may have.

Good luck with whatever you decide!