My Cousin David

I'm 27 and going to university, away from close family and friends. I was always outgoing and at university I was out of my element and became introverted. I've an older cousin who works and near the university I attend. David 33 was the book worm type growing up and went off to university done very well and got a great job as a result. I knew him to be a shy timid person growing up and like me going to university changed him to the complete opposite to what he was before. I didn't know about his change as I hadn't seen him in 9 or 10 years, only heard he done very well at university and got a great job. So, lonely for family contact I gave him a call and arranged to meet him. I went to his place a 5bedroom 3bethroom house in a very good area. I expected to meet a weedy man and instead met a well-built handsome guy, who opened the door and I said I'm here to my cousin David> He said I'm David. Gone was the weedy guy and a handsome hulk had replaced him. He explained his first couple of years at university was lonely and he decide to exercise at the gym. He got to like working out and bulked up as a result, then more attractive to the women, his life changed overtime. He has had relationships, and none led to marriage. To say I was impressed is an understatement, but I was impressed. Anyway, we had nice time catching up on family and the past. Then it was time to return to the university and boredom. David must have read my mind as he suggested I move in with him. Which I did, there was a big different living with David, one thing was he had a housekeeper and maid come Monday thru Friday and do all his housework, including laundry and they left at 5pm and left a cooked meal for him on getting home and living with David no boarding costs for parents to pay. He wouldn't accept any payment, saying it wasn't costing anything to have me stay with him. We started going out together and then sleeping together as well, I wouldn't get pregnant as I took precautions and also was around when David met his now wife and had quite a few threesomes with them and still live with them after finishing university and starting work. I still join them for sex every now and then, David is my cousin with benefits and his wife is the cream on top, also I love their two children 3 and 1. I'm not in any relationship at the moment as I measure my dates against David and haven't found anyone to match him yet.