My husband is 51 and has spoken some of his past and younger days. He has a low drive. He says he wants ?

have initiate and thinks about doing other intimate things like sitting with me on the couch and hugging but he just doesn't do it. He says when he comes home he just don't want to think about anything and just sorta shut down. After I have discussed my concerns he does try to be a little more affectionate at times. He does tell me how pretty I am but other than of a morning he does not just out of the blue tell me he loves me anymore unless I say it first. When we went away for a week of vacation. he was ready, willing and able to perform. He stays very tired, which his job is very strenous and stressful at times. He is taken more attention to his appearance when we go to church. he is a very good, Godly man and I love him very much and I believe he loves me. He never turns me down if I intiate it. Its not all about but I find him very attractive. He also is concerned about his weight gain, he said he wore a coat to church to hide his belly and that I probably wish he had a smaller belly. I told him, that did not bother me that I loved him for who he was. Could he be going through male menopause/ Serious answers appreciated..