Why no sex??????

I am looking to get a man’s perspective because everybody just says my husband‘s gay… Well, I know he is not and we have been together for 10 years but lately we have had a serious dry spell. We have not had sex in about three months, which is extremely abnormal, we’ve gone about a month before in the past just with work being busy, etc. but I’ve mentioned it a few times and expressed that I would like to… But I end up pleasuring him and get nothing in return. I would like to have sex again with my husband any ideas? Any suggestions?