<human>: I am a long time lurker, finally asking for some advice. Ill keep this as short as possible. I have been with my SO for 3 years. We are happy, and in love, and get along great for the most part. We have had our bumps in the road like all relationships. About a year ago, we got into some info about our past sexual experiences, and this didn't go down very well. There were some feelings hurt (his) and in the end, I ended up lying to him about one of them. I lied because I didn't want to deal with the fallout. I felt that none of it really mattered because it was my past and not an issue in the here and now. However, in the time since the lie started, I was asked repeatedly about it, and every time I lied, I swore on some serious stuff. (our relationship, our kids, etc) I feel awful for what Ive done. 
So last weekend I came clean about it. I told him the truth and that I had been lying. He is obviously hurt, broken hearted, and very angry. I dont expect any less. Also, his manhood was a bit bruised by the info. So because I swore on all of the most important things for so long, he feels he has no way of knowing if I am telling the truth now, because I have no way to prove it to him. 
I dont know what to do. I am being open and honest with him now, but he isn't sure that I will be able to regain his trust. Any advice would be appreciated.

Can you condense the text into three sentences or less?
<bot>: I lied for a year about a past sexual experience and swore on our relationship. I came clean but need advice on repairing the trust.