My husband cheated on me. Now what?

So my husband went to the bar last night, and text me around 3 this morning saying he was staying at his cousins house for the night. I shrugged it off and went to bed. Well he came home today around noon, and told me up front that he cheated last night and stayed at her house. I gave him points for being honest, and he seems truly remorseful. We've been having a few issues recently. We don't communicate well because he works 14+ hours per day, and I'm a stay at home mom. So the only interaction we really have is an occasional dinner at home, and when we say goodnight.

When he told me what happened, I asked him to leave and he did, and I had him come home a few hours later which he also did. We have spoken and whatnot, and we've concluded that we want to try and fix this, and mend whatever underlying problem has led to this, but I have no idea where to even start.

I want to fix this, but I feel hurt and betrayed and don't know what to do.