A Devil to Help Me Get Things Right (http://doodle-writes.livejournal.com/23394.html)
Summary: It was in moments like this that Jensen knew that they would be together forever. Nothing would or could break them apart. Jensen was wrong. At 19 he was in love with Jared, full of plans and hopes for their future. He didn’t count on dropping out of college and driving Jared away with cheating and drinking being part of them. At 30 Jensen wakes up with retrograde amnesia, his last memories of being 19 and happy. As he struggles to regain his memory and find out who he is, Jensen has to face the harsh truths of who he became and how he treated Jared. Determined not to make the same mistakes again, Jensen starts to get his life back on track and try to win an engaged and angry Jared back.

I noticed that you did not have an infidelity tag. So, I thought you should know that "One Small Step", "Bring Me to Life", and "A Devil to Help Me Get Things Right" all some infidelity in them.