I know the cause of my cum craze true story

It started one night my older bro***** Jim came in around 11 from a date. Everyone was asleep i only woke up as he was showering next to my room. The shower ran for about 2 minutes when I felt Jim lift the covers and hope under. He laid there still on his back and started telling me about his date, how she kissed him, and rubbed his dick. He then said that she gave him a short unfinished blowjob. I unknowingly asked the question what's a blowjob. Tim told me it is one of the best things you can do to someone if you love them. The he said the person giving the blowjob sucks and kicks on the other person's dick until they cum. I again asked what cum was and he said shooting your load from you cock so the blowjob giver can eat it. I laid there not moving when Tim said will you please give me a blowjob. I saidni don't think so and that's when he said you will if you love me. I laid there a minute and he said you do love me don't you. I quietly said yes and moved my head down to his already hard waiting cock. I did just like he described and licked and sucked on his cock like a sucker for about 25 seconds when I felt his cock flex and then pulse in my mouth. He exploded into my mouth and I gulped his cum down. He got up and showered. For the next 3 years I sucked Tim off 3 times a week.