Daughters Friend

My daughter goes to college and yesterday she came home for the weekend and brought her good friend over. I've been living alone for a while now and having my daughter over was great. I didn't expect however, that I would enjoy her friend being here too.
Yesterday night they were up in their room doing something, I wasn't gonna bother them at all. I was watching a movie downstairs, late at night, when my daughters friend, let's call her Sam, walked downstairs. She asked me what I was watching, and I was watching a documentary about animals. She said she loves animals and sat right next to me. I didn't expect anything, but she inched herself closer and started rubbing my leg. I didn't stop her, just got more comfortable and wanted to see if she would do anything. She said she loved older guys and had a fetish for dads. I just encouraged her and told her that we all have our attractions, it's natural. She asked to see my dick and that took me by surprise, but I have been alone for too long to refuse. I pulled it out and I could see she could hardly contain herself. I told her she could take it and she didn't hesitate to take it all in her mouth. There was some struggles, but choking on a dick happens sometimes. I held her head to guide her down my shaft. After about 15 minutes of sucking, she asked me to cum in her mouth, so that is exactly what I did. It was the best orgasm I had in years. She leaves today, but I really hope she visits again.