Fiancee Self Aware Of His Body

My fiancee and I have been together for almost 6 months. He's very self aware of his body and his weight he weighs 500 pounds andvI don't judgr him for his weight, he plays football and a football team called and asked him to play for his he'd be making thousands od dollars per season and if he goes pro he'd be making millions. His new career makes him travel and I will be going witg him he starts pracrice on May 24th 2018 we are getting married on May 4th 2018. We are kind of trying for a baby but at the same time we aren't it's like if it happens then it happens. I'm 19 abd he's 18 but will be 19 on November 26th 2017. But once he starts his career we will be financally able to raise a little one. But we never really have sex because his mom doesn't like me and I'm not allowed at his house when his mom is there. I go over there every so often to make ojt and have like border line sex where he kind of fingers me he has big fingers so he doesnt really go into my hole abd then I give him a handjob. I dont know what to do I do not judge him about his weight at all