What have I learned today

Ever week of so I try to sit down quietly and think about what I have learned. this past week has been nothing but  a lesson on self reliance.
Because I am in a relationship I always gave my partner priority, I always considered him when I did almost every thing, And in the past week I have found that I do not even exist on his priority list.
Unless I am standing there in front of him and in his face, I believe that I do not exist. this was very hurtful to discover, but rather than let it ruin my life and cause all sorts of problems. I intend to go on my merry way doing what ever I want.
I have  to question why he is still here. and I have come to the conclusion that it is an easy way to live all of his needs were met with out question, he has a place to eat , sleep, work, as he sees fit, it costs him a lot less than living on his own.
So those are the benefits for him, but I can no longer see any benefits for my self.Yes I admit he did do a lot of renovations around the house and it was appreciated, but I paid for them.
I have a friend who asked me why I even have him here and I  have no answer. There is no companionship, no sex, and not even friendship, we just are going our separate ways, and meet for meals I prepare.
So I have learned a lot but still have no answers.