How should i get over being jealous of what my girlfriend did uring our break?

I have been with my girlfriend Mellisa for two years. Two months ago we decided to take a break - everything was getting routine. Also we thought it might give us perspective on our future together. We both agreed and made it a real break, so we didnt promise not to see anyone. I didnt really date, though i flirted a little. we only talked by phone, but we called a lot. I wanted to end the break but she wanted to wait a little. After 4 weeks (1 month ago) we finally got back together. Last week i finaly asked her if she had slept with anyone else. she tol me she was with her ex for one drunk night which she regrets, and for the last week before we got back together she was seeing someone from her work, which is why she wasnt ready end the break. she admits she had an intense thing- she saw this guy everyday for a week and had 3 or 4 times a day. I am just happy to have her back, but I feel some jealousy, especially because now she wants me to make love different than before.advice?