Relationship with no Attraction?

My fiancé and I have been together over 2 years now. The past year has been very testing on us and we’ve had to make a lot of changes, like moving house and changing jobs etc. Plus dealing with our individual mental health challenges. I’ve noticed for a few months now that he’s been very distant with me. He started classing us “spending time together” as us just being home at the same time, not even doing the same thing. Well tonight(on his birthday of all days) he told me he loves me with all his heart but the attraction isn’t there. It was prompted as he asked me to please him but I got nothing in return and I got emotional. I don’t know how to process this. Can a relationship last without physical attraction? He won’t give me a reason and says he can’t pinpoint when he lost the feeling of attraction for me, but He wants to stay together for love. But I can’t help but feel used and led on. I love him more than anything and can’t imagine not being with him. I’m very confused right now and wondering if anyone has had a similar situation or advice