Is it wrong to date a mutual friend of an ex-boyfriend?

Anonymous
About five months ago, my boyfriend and I broke up. While our relationship had a kind of messy ending, and I was angry with him for awhile, I got over it, and we're now on peaceable terms (even though we don't have much contact anymore). Since then, he has gotten a new girlfriend, and we've both moved on.

However, a couple of months after we broke up, I started to become closer with one of our mutual friends. Recently, we've both admitted to liking each other, and he asked me out on a date a few days ago. I told him I was worried that my ex might be upset if he found out, so we're going to keep it quiet for awhile.

Is it okay to secretly date a mutual friend of my ex-boyfriend (we're not officially in a relationship or anything), or are we both betraying him?
Is it wrong to date a mutual friend of an ex-boyfriend?
2 Opinion