<human>: I am a very open person, but the guy that I am currently in a relationship with is extremely reluctant to share anything about his past. He is also uninterested in knowing anything about my past. We have been together for about three months and we've never really talked about our sexual history or our past in general. 

This bothers me. 

I feel like learning about someone's past helps you understand them better. I also think its a good way to bond. On the other hand, I can see how, if you've changed a lot, you might not want other people to know about your past for fear of being misjudged. 

So what do you guys think about this? When you are in a relationship with someone, should you have open conversations about your pasts, or do you think it's better to keep your history to yourself and focus on the future?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: I think its important to share your history with your partner. SO thinks its better to keep the past private. thoughts?