He is considerably older than I and that may be where he is feeling insecure. I have extreme doubt that he is unfaithful as he is generally a very loving and sincere person. He hasnt started any medications, but he is slowing down on his drinking habits (which werent to the level of alcoholism, but he recognized it was getting unhealthy). He will usually accuse me of cheating when he is under the influence. I will then get upset and talk him down out of it, and he will have a moment of clarity like "oh my god I'm such a d#ck for saying this to you"... but it will still happen again in the future. I know he is worried about money and feels like he deserves more out of life (which he does because he works his fingers to the bone). He has been cheated on in the past, and Im sure it is a combination of worrying that I will leave him for a man my age, as well as remnants of fear from past relationships. But why now, with no proof or reason?