You betrayed her trust but she still forgave you, this happens more often than you might think, but now that it has happened to you your stressing about it because not only can you not do anything without her being suspicious, you are worried about if she will cheat. You can not even go out for coffee now without her being suspicious and for good reason to. You betrayed her trust and now you need to earn it back but how can you when she forgave you but didn’t forget what you did.
So what you do at this point says a lot about where this relationship is going. At this point you need to own up to what you did and talk to her about why you did it. If you were losing interest sexually explain that to her and own up to it. Make sure that she knows you regret what you did. Cheating often comes from a lack of communication about needs that you have in the relationship. Talk to her about this, communications is what is going to keep the two of you together after all that has happened.
She is going to be suspicious of everything you do for a while and for good reason too, the best thing you can do at this point is just accept it. Understand that you have to gain that trust back, tell her that you have nothing to hide and don’t mind her checking up on what you are doing. Now you might even be suspicious of her because you messed up and that is completely normal. You just need to consider the fact that you are the one who messed up not her. Have a little trust that since she forgave you she loves you enough not to cheat.
Trust can take years to build after it had been broken so the most important thing you can do is work with her to figure out why it happened the way it did. Find the problem and solve it, maybe you were feeling unsatisfied sexually, maybe the two of you need to spend more time together or try new things together. You need to work through your problems before the relationship can get back to the way it was.
There may come a time when the relationship is just over after you cheated, you can try to get through it together but sometimes it is just to far gone to be fixed. Knowing and accepting when this happens is the best course of action. Too those of you reading this who haven’t cheated and are not in this situation, don’t do it, it complicates everything to much.