He doesnt seem interested in sex?

Ok so me and my boyfriend of 4 years just moved in together and all of the sudden after many years of a Very healthy sex life he no longer seems interested in being with me. We moved in together more because, he pressured me into it its not like i was trying to intrude onto his space. I was perfectly content alone in my home.I don't get it. I mean he just started a job a couple of months ago, and I know that has stressed him out a little. I have been understanding hes tired and stressed. I am absolutely not the susie home maker type but I have put effort in i do his laundry, cook etc... and i work 40 hours a week just like him so I do not know what I am doing wrong. I already talked to him about it and it didn't really seem like it sunk in. Im a nice looking girl I know its not my looks. I feel like I shouldnt have to tell him hey please have sex with me I don't know its like we moved in together he got what he wanted and now its like ok I have her so now don't need to put in any effort