Relationship failing HELP

Ok so me and my fiancé have recently started drifting . We use to talk a lot and do soo much together but it's like we're people who associate rather than partners . I've noticed that this has started happening ever since I decided that I didn't want to have Unprotected sex as I wanted to come off the pill. Of course I thought that this wouldn't be the reason why but I'm starting to feel as it is. He hates having sex using a condon therefore we haven't in like a mounth. The relationship fells as if it's failing and I don't know what to do. P.S we live together