<human>: We met around 6 years ago but lost contact.
We reconnected a month ago and we instantly felt, that there was more than friendship.
We decided that we both wanted a serious relationship so we had a very long talk about all aspects about what we want and expect from a relationship. We talked about all boundaries and such things.

We too spoke about our past and he told me there was a time when he used to sleep around with many random girls. 

That hit me hard. I know that his past has nothing to do with me, but it bothers me. But I can get past this, because it is really not my business what he did before me.

My real problem is, that I never slept around and now I feel like I missed something in my life....I want to experience this, too. 
I don't know why I feel this way. I think it is really ridiculous, but I can't help it.

What can I do to deal with this???

Give me a shortened version of the text
<bot>: New boyfriend used to sleep around. I never did and now I'm feeling like I missed something in my life. How can I deal with this feeling?