My best friend kissed my husband

I’m 21, my husband is 23. We are together more than 4 years but got married couple of months ago. Well, almost a week ago we were at my best friend’s birthday party, playing truth or dare. One of our friends dare my friend to kiss my husband, they laughed and kissed (without tongue) and everyone was laughing, it was quick kiss but I still feel terrible. They kissed in front of me and I know it was just a game but can’t stop thinking about it. After that night, they actually started texting each other, which never happened before, my husband even told me that she was cool. I told him how I felt after that night and he told me ‘you’re overreacting’, then I talked to my friend and she was like ‘ chill out, we just kissed, It’s not like I’m gonna fuck him’ and laughed really hard and huged me. What’s happening? Am I overreacting?