After the party

Short story, I was invited to a party at my neighbor's place and I had to work the afternoon shift that day. My neighbor Kathy 32 divorced told to drop by after work, on finishing work I went home and bathed and dressed for the party. By that time it was getting late, I arrived at the party about 10pm. Kathy welcome me on my arrival and she was already fairly drunk. I got a drink and talked to several people, but the party was ebbing away as time passed. Around 11 there were only 6 people at the party still and Kathy was still drinking. Shorty after she had disappeared and other people left leaving me and Kathy. I found her passed out on a bed, I was going to go. But decided I should give a hand cleaning away the dishes and rubbish. I didn't have to work next day and thought it would help Kathy. I packed the dishes into her dish washer, rubbish into her bin. I turned off the lights on my way to leave, but decided to check on Kathy before I left. I intended to put a blanket over her and leave, but she was awake and somewhat drowsy and so I told her I had done a quick clean up and was going to go. I'm David 34 single and not real partying type guy. Kathy asked me to stay longer, but I wasn't keen as she looked tired and I wasn't sure why she wanted me to stay. But she soon told that she wanted me to sleep with her and started to beg me to stay with her. I wasn't sure I should sleep with her she wasn't sober and I thought it would taking advantage of her condition. But she opened her top and told she really wanted me and my cock got hard and so I stayed and fucked her, I got up first around 8 and went to pee. On my return she was awake and smiled at me and asked me was I up for another round. Being naked and my cock going hard, I agreed. After several more fucks during the day. I finally got back home around 6 30. Totally spent, Kathy has started coming over during weeks that has followed the party and sleeps with me. I haven't taken her out on a date yet, but am regularly fucking her. I like Kathy but not sure if its enough to make it a more formal relationship.