My ssbbw stepmom made me cum

i dont know who i can talk to about this so i just need to write it here,i really wish i could at least have a ssbbw friend on here who could chat with for advice sometimes like,a woman who could guide me threw what im going threw about it.my dad left us a while ago and something happened with me and my stepmom then.the thing is shes maybe over 300 lbs and its mostly in her really big ass cheeks and her tits and thighs,shes really big in those places and i never was around a woman whwhose like that before but it made me stroke myself alllot thinking about it.and ialways tried to only stroke a little about her and not let myself cumm from it cause i felt wrong doing that. but, one night i had a dream she was naked on me and and she was telling me to feel how heavy her tits were and i felt like i was about to explode and she just looked down at me and she said my huge ass is gonna make you cumm, and then i woke Up Spurting hard and it felt really really good and i had to keep stroking cause even after i woke up spurting the way it felt made me need to squeeze it hard and just stroke till it was all done.so that was the first time i came thinking about dawnna but it wasn my fault cause it was from a dream. but I couldnt stop thinking about her big and naked and i think she started to wonder if i wanted her.l and i started stroking about her for really long times with out letting myself cumm cause whenever iexploded about it theni felt guilty but also i really liked struggling all night trying not to cumm from her big hot body. finally i felt so wrong i just started this xhamster account and i just couldnt stop stroking myself about bbws and ssbbws on here, anyway my dad left one day cause hes a raging asshole and he didnt come back and then Dawnna had the locks changed cause its her house really anyway and she said that night she wanted to talk to me. She said to go get ready for bed and that she would come t talk to me .so I brushed my teeth and got in my boxers and t-shirt and was in bed and i heard her coming to upstairs cause of how big she is and she said she would be right there and i said okay. And then after a couple minutes she came into my room totally naked