My Neighbour

I'm male, 22, from the UK with a fairly athletic body and this is a story that happened a few days ago.

My neighbour came over and asked if I could check on her pets for a few day as she was going away for a couple of nights.  I'd always found her attractive; she was in her late 30s, curvy body and dark-skinned with a gorgeous face.  We'd flirted a few times in a joking way, but I never thought anything of it.

Even so, I was more than happy to watch her pets for her. After I agreed to do so, her next words were along the lines of "make yourself at home, watch the TV, eat some food, play on the Playstation, go through my underwear drawer...just kidding."

As soon as she said... that I couldn't stop thinking about those words and I completely zoned out for a moment. When I returned to the present moment, I heard her saying she'd be leaving within an hour. She handed me the house key and left.
for ages I sat watching tv with the volume low, listening to hear her leave so I could go over.
 eventually I heard her leave and waited a few minutes before I went over.
i sat downstairs for a while with her pets watching tv and just chilling, with the thought of her underwear drawer on my mind.
i finally gave in and had to go search.
i went upstairs and found her room, it was messy with clothes all over the floor and bed, I peeked into every drawer until I found her underwear drawer.
it was very full, of sexy, lacy underwear and casual ones too.
 i looked through all of them and eventually found some sexy black lacy ones.
by this point I was already semi hard and just had to smell them, I brought them to my face while rubbing my dick over my jeans.
i gave into my needs and went over to her bed, layed down and unbuttoned my jeans while still smelling her panties.
i took my dick out and started to stroke it slowly getting faster and faster as I imagined her wearing these panties and what she'd got up to in this bed.
which is when I realised.. she obviously masterbates.. maybe she has a toy in here somewhere.
i got up straight away excitedly looking for it, obviously the first place I checked was her bedside cabinet and sure enough in the last drawer.. was a bright pink vibrator.
i held it and could feel my dick getting rock hard. 
in seconds I stripped naked and got on her bed with her toy to my face sniffing it, her panties wrapped around my dick and jerked off hard!
it didnt take me long to come, it soaked her panties, I couldnt put them in the laundry basket or in the washing machine as she'd see and know what i'd done
 so I took them home and have been using them to help me cum ever since.
she hasnt said anything or given me any weird looks since so she must not know what i'd gotten up too.. but now I know what she gets up too.