Remember this is free advice...
I just ended a 4 year relationship with a 30 year old man, I am 54.
Like you ,I look younger and he actually looks older. I was always bothered by our age difference, he wasn't. there was also the matter of children. most young men say they are ok with not having kids of their own.
I was always the nurturer, and he loved that, however after time I began to resent being the giver. Men love to be taken care of, so, just make sure you are not the one giving all of the time. It looks to me like you are the one going to him more often, just pay attention to the red flags and be sure you don't justify all of your moves, in the name of love..
My advice is to take care of yourself... get your own place, find your inner strength.
if you do move in with him, let him be the man, the provider, as that is a mans responsibility, a real man that is. Many times when there is such an age difference we are looking for unmet needs.
Chances are you will be doing all of the cooking cleaning and being there just as you have been doing for your three boys and husband. Something you have been conditioned for the past 30 years.
It is new; and feels great to be wanted and turned on. something you haven't felt in many years.
Ok now we get down to the facts.... Is he responsible with money? Does he live on his own,? Does he have heath insurance? What are his goals?.
If you do move in together, please make sure you get a credit check, ( you can't buy a car or a home with out a credit check...protect your investment! invest in yourself)
I know that doesn't sound romantic, but it does sound responsible, and believe me ,you will not want to be responsible for any of his debts, or the debts you may incur if and when the relationship may end. You may be older and you want to be wiser as well. Also you will want to keep your money separate. You can and will support his potential, just make sure you do not support him financially, That way you will have no regrets.
One more thing.... have you met his parents? This is important! you shouldn't judge people by their family, but believe me, the apple doesn't fall far from the tree. how he treats his mother is how he will treat you given time.
You will follow your heart....
Just remember to be heart healthy, we aren't as young as we used to be.