I feel my relationship is slowly dying but I really want it to work. Any advice?

I have been with this man for 7 months now. About a month ago we moved in together. I’ve thought up until we moved in together that I was going to end up marrying him no question about it. But since we have moved in he seems to have lost interest in me. 9 times out of 10 I initiate intimacy. He tells me he loves me more than anything but I feel there is no romance anymore. I have even expressed these concerns with him before and he just didn’t seem to take it seriously. I feel there is no fire and that the relationship has gone ice cold. Should I just move on? Sorry I truly am confused about what to do and need advice. Thank you.