Why don't memories fade?

So worst thing happened today. Friend of mine is in Atlanta for the day. That's where all of my memories take place. Of course he would be texting me the whole time he is there. The one question he asks me. "Hey what school was it you went to over the summer"? The last question I wanted to hear. So of course after answering that question so many memories from that week started flowing through my mind. Our conversation at the hidden coffee shop, or maybe the walk to his car where I got my very own tie-dye shirt where we shared our first kiss, or my favorite which was when he came back to the hotel. We layed there just enjoying each others company. Sharing kisses and eye glances back and forth. I hate memories. I wish I could press an erase button and they be gone.