Cheated and lied to

My husband cheated on me...I found out 2 years ago,it was with a much younger person,she was 20 at the time,I was 37 when I found out.It was an emotional relationship for a month and they spent one night together and yes they had sex.We are still together but I find it very hard to deal with,I still love him,we have one child together but there's so much he has done,he's broken every promise he made to me since the affair and he continues to lie,even about trivial things...I feel like i'm going crazy!I don't think he has cheated again,I'm not 100 % sure but I doubt it has happened.

I know it hard to do the the do the 2 f's forgive and forget. Do he ever tell you why he did it. But to get round round it you both need to be more honest with one another and start talking etc otherwise in the long term this will eat you up from inside and in return you will grow to hate him and yourself don't let this happen. Some time we need to let go of the pass if it's gets us to next stage etc. But if he doesnot open up this is where it's starts eating you up you having doubts about yourself as a person. Could I have done this or done that. If you can get over that high wall you stand a chance of working things out. But mostly likely they say it in the pass and he won't want to talk about it reason why this he feel shame and embarrass he got discovered. But it will take time to get trust back.