Hubby's best friend
Before my husband and I were married but still dating, I used to fuck his best friend. We all were in college at the time and they were roommates. I came over after class one day during my freshmen year of college and caught his friend in the shower masturbating. He has a really big dick and I surprised him by joining him and sucking his dick in the shower. The second time we hooked up my husband was past out from drinking and I snuck into his friend's bed and rode his dick. We fucked a lot during our freshmen year, usually while my husband was in class or sleeping. We did it all over the dorm, even in my husband's bed and on his desk. I was really young and stupid at the time and I guess just wanted to experience what a big dick was like.
After our freshmen year, we broke it off and I remained faithful to my husband ever since. They are still best friends, so should I risk telling him and ruining our marriage and their friendship?
When my wife and I were dating and when we got engaged she was also fucking my best friend. She didn't tell me she was doing him. He was even my best man at our wedding.
Many years after we married I found an email from him remembering how they used to fuck behind my back. I asked her about it and she admitted to it all. We have stayed together but I can't really trust her.
You don't say how old you are or how long you've been married, but if you stopped fucking your husband's friend after your freshman year, it seems odd you'd want to risk your marriage and ruin the friendship now. You got what you wanted from both of them so why don't you just shut up and stop acting like a stupid 18 year old?
You should have told him at the beginning, although it is a hard thing to do. I would not encourage you to tell him now.
My wife was in a similar sex relationship as you before we married. When I asked her to marry me she told me she could not be faithful as she was already having sex with two other guys. We discussed and eventually agreed on an open marriage. She has had sex with many men over the years with no problems between us. So honesty and openess right from the start is the best way. This may not be your preference, probably happy as you are, so don't destroy it as you don't know what your husbands reaction may be.
You sound a very decent loving woman and he should be lucky to have you.